←MLO Arp "Peculiar" Galaxies - Northern Program
Observed for the Astronomical League's Arp Pecular Galaxy (Northern) Observing Program
Marie Lott, Atlanta, GA
Updated 11/26/23 05:04 PM -0500

In 1966 Halton Arp catalogued those 5-10% of galaxies which do not neatly fall along the standard Hubble sequence of morphology. These oddball galaxies may have been altered by interacting with other galaxies nearby or may contain active galactic nuclei. The Arp Catalog is available online here. A selection of Arp's "Peculiar" Galaxies are imaged below. Current image tally: 107.

 Galaxy Categories in the Arp Catalog 

Spiral Galaxies
Spiral galaxies of low surface brightness, Arp 1-6: 2 3
Spiral galaxies with split arms, Arp 7-12: 8
Spiral galaxies with detached segments, Arp 13-18: 13 16 18
Three-armed spiral galaxies, Arp 19-21: 19
One-armed spiral galaxies, Arp 22-24: 23 24
Spiral galaxies with one heavy arm, Arp 25-30: 25 26 27 28 29
Integral sign spiral galaxies, Arp 31-36: 31 32 33 34
Spiral galaxies with low surface brightness companion on arms, Arp 37-48: 37 38
Spiral galaxies with small high surface brightness companions on arms, Arp 49-78: 49 51 68 71 72 76 78
Spiral galaxies with large high surface brightness companions on arms, Arp 79-91: 79 81 84 85 90 91
Spiral galaxies with elliptical companions on arms, Arp 92-101: 92 94 96 99 101


Elliptical and Elliptical-like Galaxies
Elliptical galaxies connected to spiral galaxies, Arp 102-108: 104
Elliptical galaxies repelling spiral arms, Arp 109-112: 111
Elliptical galaxies close to and perturbing spiral galaxies, Arp 113-132: 114 116 117 122 124
Galaxies with nearby fragments, Arp 133-136: 133 134 135 136
Material emanating from elliptical galaxies, Arp 137-145: 140 144


Amorphous Galaxies: Neither Spiral Nor Elliptical Galaxies
Galaxies with associated rings, Arp 146-148: 146
Galaxies with jets, Arp 149-152: 149 152
Galaxies disturbed by interior absorption, Arp 153-160: 153 155 157 160

Galaxies with diffuse filaments, Arp 161-166: 162 163


Amorphous Galaxies: Neither Spiral Nor Elliptical Galaxies, continued
Galaxies with diffuse counter-tails, Arp 167-172: 171 172
Galaxies with narrow counter-tails, Arp 173-178: 176
Galaxies with narrow filaments, Arp 179-193: 182 185 189
Galaxies with material ejected from nuclei, Arp 194-208: 199 202
Galaxies with irregularities, absorption and resolution, Arp 209-214: 209 212 214
Galaxies with adjacent loops, Arp 215-220: 216 217
Galaxies with amorphous spiral arms, Arp 221-226: 222 223 225
Galaxies with concentric rings, Arp 227-232: 230
Galaxies with the appearance of fission, Arp 233-256: 233 234 239 244 248 256
Galaxies with irregular clumps, Arp 257-268: 258


Double and multiple galaxies
Galaxies with connected arms, Arp 269-274: 269 270 272 273 274
Interacting galaxies, Arp 275-280: 278 279 280
Galaxies with infall and attraction, Arp 281-286: 281
Galaxies with the appearance of wind effects, Arp 287-293 293
Double or multiple galaxies with long filaments, Arp 294-297: 295 296 297
Unclassified double galaxies, Arp 298-310: 299 305 308
Groups of galaxies, Arp 311-321: 313 316
317(1) 317(2) 318
Chains of galaxies, Arp 322-332: 323 326


Miscellaneous galaxies, Arp 333-338: 337

All images below were taken using a Mallincam CMOS camera in Sharon GA USA or via the remote telescopes of Dubbo Observatory, Warrumbungle Observatory, and TelescopeLive. The Dubbo Observatory telescope, located in Dubbo, NSW, Australia, is a 0.43m f/6.8 Planewave CDK17 fitted with an SBIG STL11000CM camera. The Warrumbungle telescope, located in Coonabarabran, NSW, Australia, is a 0.51m f/6.8 Planewave CDK20 fitted with an SBIG STL6303E camera. The IC Astronomy Observatory SPA-2 telescope, located near Oria, Almeria, Spain, is a 0.7m f/8 Officina Stellare ProRC700 fitted with a FLI PL16803 camera. The El Sauce Observatory CHI-1 telescope, located in Rio Hurtado, Coquimbo, Chile, is a 0.6m f/6.5 Planewave CDK24 Reflector fitted with a FLI PL9000 camera.

  • For the remote images, calibration was done scope-side, with minimal levels, curves, &/or noise reduction adjustments applied later in Photoshop and Topaz Denoise AI. 

  • For the local images, screenshots were taken of the live capture in MallincamSky and a one-step Topaz Denoise AI was used post-capture.

  • Image dimensions and orientations were obtained using nova.astrometry.net. All other galaxy specs were obtained from Sky Safari Pro.

  • Note: images are currently a mix of North-up and South-up. I will try to rectify this over time.

 

Spiral galaxies of low surface brightness (LSB), Arp 1-6

Arp 2: UGC 10310
Dim and diffuse, this galaxy hides in Hercules as a faint ghostly blob with little discernable structure. A sharply bent blotchy arm can be detected to the SW, with a hint of a similar arm opposite on the NE side. A compact companion HII galaxy is seen to the SE; both are travelling through space at the same distance and speed.
16h 16m 17.90s +47° 02' 43.0" in Hercules
Visual Magnitude: 13.25, Size: 2.5 x 2.0 arcmin, Type: Sm, Distance: 49 Mly
This galaxy is receding from us at 717.1 km/second (0.2% light speed).

Arp 2
Image Details:
North is up, East is left (Up is 0.196° E of N)
13.8 x 13.8 arcmin, cropped; pixel scale 0.809 arcsec/pixel
2020-08-14 23:18:22 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Arp 3: MCG-01-57-016
Spiral structure evident despite the LSB, with visible knots and dust lanes. Galaxy faces us at a bit of a tilt and has a glowing appearance.

22h 36m 35.00s -02° 54' 24.0" in Aquarius
Visual Magnitude: 12.90, Size: 2.4 x 2.0 arcmin, Type: Sm, Distance: 83 Mly
This galaxy is receding from us at 1692.5 km/second (0.6% light speed).

Arp 3
Image Details:
South is up, East is left (Up is 180° E of N)
23.1 x 23.1 arcmin, cropped; pixel scale 1.35 arcsec/pixel
2020-06-20 05:46:09 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2


Spiral galaxies with split arms, Arp 7-12

Arp 8: NGC 497
Arp described the SE (lower left) arm of this distorted spiral as "split". This is easier to see in the inverted image. The NW (upper right) arm extends straight outward before making an abrupt 90° turn to the SW.
01h 22m 23.80s  -00° 52' 31.0" in Cetus
Visual Magnitude: 12.91, Size: 2.1 x 0.9 arcmin, Type: SBbc, Distance: 370 Mly
This galaxy is receding from us at 8134.1 km/second (2.7% light speed).

Arp 8
Image Details:
North is up, East is left (Up is 0.397° E of N)
15.4 x 15.4 arcmin, cropped; pixel scale 0.902 arcsec/pixel
2020-07-27 03:20:12 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Spiral galaxies with detached segments, Arp 13-18

Arp 13: NGC 7448
Elongated and sharply tilted spiral, fading and knotty to the North (up) with bright star-like core
23h 00m 37.00s +15° 58' 49.0" in Pegasus
Visual Magnitude: 11.52, Size: 2.1 x 0.8 arcmin, Type: Sc, Distance: 140 Mly
This galaxy is receding from us at 2191.5 km/second (0.7% light speed).

Arp 13
Image Details:
North is up, East is left (Up is 0.588° E of N)
20.1 x 20.1 arcmin, cropped; pixel scale 1.18 arcsec/pixel
2020-06-21 09:19:11 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure


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Arp 16 (also part of Arp 317): Messier 66
Prominent spiral arms especially to the SE (up), with bright barred/elongated galaxy core; an outer diffuse arm points almost straight S (up).
11h 20m 15.00s +12° 59' 30.0" in Leo
Visual Magnitude: 8.91, Size: 10.3 x 4.6 arcmin, Type: Sb, Distance: 111.8 kly
This galaxy is receding from us at 720.6 km/second (0.2% light speed).

M65-M66
Image Details:
South is up, East is left (Up is 195° E of N)
39.2 x 29.4 arcmin; pixel scale 3.26 arcsec/pixel
2020-02-14 23:25:17 EST, Sharon GA
Mallincam DS287c, 5x12s exposures average-stacked, screenshot at 110 frames output
102mm refractor @ f/3.5, no filter

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Arp 18: NGC 4088
Distorted & elongated arms with a distinct "head" and tapered "tail"; looks like a dementor with a bright belly.
12h 05m 33.90s +50° 32' 19.0" in Ursa Major
Visual Magnitude: 10.57, Size: 7.0 x 2.6 arcmin, Type: SABc, Distance: 48 Mly
This galaxy is receding from us at 749.4 km/second (0.2% light speed).

Arp 18
Image Details:
North is up, East is left (Up is 359° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 1:23 EDT, Sharon GA
Mallincam DS287c; screenshot taken at 9 minutes of live-stacking 10x7s exposures @ gain 22
102mm refractor @ f/3.5, no filter

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Three-armed spiral galaxies, Arp 19-21

Arp 19: NGC 145
An asymmetric spiral with three prominent arms and possibly remnants of 1-2 other arms, all originating to the N and E (above & left) of the core. This galaxy seems to have lost its bottom half! The brightest arm seems to curl more than halfway around the galaxy clockwise N->W->S/SE. Many other small galaxies are visible in this image. The inverted image shows off the details in the arms nicely. (The background shading artifact is caused by reddish light trespass of nearby Mars, about 10° away to the NE.)
00h 31m 45.70s  -05° 09' 10.0" in Cetus
Visual Magnitude: 12.69, Size: 1.8 x 1.4 arcmin, Type: Sd, Distance: 190 Mly
This galaxy is receding from us at 4134.8 km/second (1.45% light speed).

Arp 19
Image Details:
North is up, East is left (Up is 0.397° E of N)
14.7 x 14.7 arcmin, cropped; pixel scale 0.861 arcsec/pixel
2020-07-26 03:25:55 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, bin2 SPA-2: 700mm reflector @ f/8

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One-armed spiral galaxies, Arp 22-24

Arp 23: NGC 4618
Off-center core, with the galaxy seriously warped towards the S (down).
12h 41m 32.90s +41° 09' 03.0" in Canes Venatici
Visual Magnitude: 10.81, Size: 3.6 x 2.3 arcmin, Type: SBm, Distance: 37 Mly
This galaxy is receding from us at 537.5 km/second (0.2% light speed).

Arp 23
Image Details:
North is up, East is left (Up is 359° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
2020-06-21 00:46:48 EDT, Sharon GA
Mallincam DS287c; screenshot taken at 5 minutes of live-stacking 10x7s exposures @ gain 22
102mm refractor @ f/3.5, no filter

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Arp 24: NGC 3445
Another 1-armed spiral, this one with a jumbled-up core and a tiny detached companion stuck almost invisibly to the tip of the lone arm (S) like a dust bunny.
10h 54m 35.70s  +56° 59' 24.0" in Ursa Major
Visual Magnitude: 12.51, Size: 1.4 x 1.3 arcmin, Type: SABm, Distance: 110 Mly
This galaxy is receding from us at 2416.0 km/second (0.7% light speed).

Arp 24
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-05-21 00:58:15 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Spiral galaxies with one heavy arm, Arp 25-30

Arp 25: NGC 2276 (with Arp 114, NGC 2300)
Delicate pinwheel with off-center core; a distinctive tubular arm extends almost straight out before making a sharp 90° turn sideways; heavy mottling on the western (right) side.

07h 27m 13.10s  +85° 45' 05.0" in Cepheus
Visual Magnitude: 11.37, Size: 2.2 x 1.7 arcmin, Type: SABc, Distance: 130 Mly
This galaxy is receding from us at 2416.0 km/second (0.8% light speed).

Arp25 and Arp 114
Image Details:
South is up, East is left (Up is 180° E of N)
18.3 x 18.3 arcmin, cropped; pixel scale 1.07 arcsec/pixel
2020-05-01 02:35:25 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 26: Messier 101, the Pinwheel Galaxy
Huge asymmetric spiral with prominent angular arms, knotty & somewhat chaotic.
14h 03m 13.60s  +54° 20' 56.0" in Ursa Major
Visual Magnitude: 7.77, Size: 24.0 x 23.0 arcmin, Type: SABc, Distance: 23 Mly
This galaxy is receding from us at 236.9 km/second.

Arp 26 / M 101
Image Details:
North is up, East is left (Up is 350° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
2020-06-14 03:05:03 EDT, Sharon GA
Mallincam DS287c, 10x10s exposures average-stacked; Gain20; screenshot at 106 frames output
102mm refractor @ f/3.5, no filter

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Arp 27: NGC 3631
Heavy straight arm pointing E (left) below the core, with a prominent (dark) absorption tube spiraling around the E side of center. Bright & knotty curved arm just above the core to the S (top).
11h 21m 02.90s, +53° 10' 10.0" in Ursa Major
Visual Magnitude: 10.10, Size: 3.7 x 3.1 arcmin, Type: Sc, Distance: 66 Mly
This galaxy is receding from us at 1163.2 km/second (0.4% light speed).

Arp 27
Image Details:
South is up, East is left (Up is 180° E of N)
16.1 x 16.1 arcmin, cropped; pixel scale 0.941 arcsec/pixel
2020-05-01 02:35:25 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8
 

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Arp 28: NGC 7678
Beautiful face-on spiral with the appearance of wind blowing everything to the S. There are three arms in this spiral, with the southern one quite heavy and straight. The galaxy seems to be tacked in place by the three bright stars surrounding it.
23h 28m 27.90s, +22° 25' 17.0" in Pegasus
Visual Magnitude: 11.78, Size: 2.0 x 1.5 arcmin, Type: Sc, Distance: 150 Mly
This galaxy is receding from us at 3498.9 km/second (1.2% light speed).

Arp 28
Image Details:
North is up, East is left (Up is 0.285° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.95 arcsec/pixel
2020-07-23 02:58:30 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8
 

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Arp 29: NGC 6946, the Fireworks Galaxy
Elongated spiral with a rather squashed look to it, due to the S (top) side lacking obvious arms.
20h 34m 52.60s  +60° 09' 13.0" in Cygnus
Visual Magnitude: 8.88, Size: 11.4 x 10.8 arcmin, Type: SABc, Distance: 22 Mly
This galaxy is receding from us at 45.7 km/second.

Arp 29
Image Details:
South is up, West is left (Up is 179° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 02:04:57 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x7s exposures @ gain 23
102mm refractor @ f/3.5

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Integral sign spiral galaxies, Arp 31-36

Arp 31: IC 167
The two arms remaining of this face-on spiral
splay out widely from the elongated core. The NW arm appears damaged and knotty. The SE arm is sharply bent and shows damage as well. The arms of IC 167 are so faint, I'm not sure how anyone can see them visually, even with an enormous lightbucket! Small NGC 964 to the N has almost the exact redshift (0.00986) as IC 167 (0.00982) and probably participated in the pillaging of IC 197. The beautiful wide spiral to the S has a similar redshift (0.008744) and conceivably could also have been involved.   
01h 51m 8.6.30s, +21° 54' 46.0" in Aries
Visual Magnitude: 13.10, Size: 1.6 x 0.9 arcmin, Type: Sc, Distance: 64 Mly
This galaxy is receding from us at 2933.7 km/second (1.0% light speed).

Arp 31
Image Details:
North is up, East is left (Up is 0.324° E of N)
16.5 x 16.5 arcmin; pixel scale 0.97 arcsec/pixel
2020-07-27 03:11:07 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2  SPA-2: 700mm reflector @ f/8
 

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Arp 32: UGC 10770
This object is actually two galaxies touching. The top one fishtails around toward the S (top); the bottom one is more evenly elongated but some distortion can still be seen near the point of contact.

17h 13m 10.30s, +59° 19' 45.0" in Draco
Visual Magnitude: 15.38, Size: 0.8 x 0.3 arcmin, Type: IB, Distance: 71 Mly
This galaxy is receding from us at 1157.4 km/second (0.4% light speed).

Arp 32
Image Details:
South is up, East is left (Up is 180° E of N)
16.5 x 16.5 arcmin; pixel scale 0.964 arcsec/pixel
2020-05-19 02:45:08 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8
 

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Arp 33: UGC 8613
Diminuitive wispy galaxy giving a bit of a "swoosh" to a pretty cluster of petite galaxies.
13h 37m 23.90s, +06° 26' 12.0" in Virgo
Visual Magnitude: 15.29, Size: 1.3 x 0.4 arcmin, Type: SBc, Distance: 350 Mly
This galaxy is receding from us at 7162.0 km/second (2.4% light speed).

Arp 33
Image Details:
South is up, East is left (Up is 180° E of N)
19 x 19 arcmin, cropped; pixel scale 1.11 arcsec/pixel
2020-06-11 23:01:58 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 2x60s exposure

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Arp 34: NGC 4615/4614/4613
Lovely gently S-shaped galaxy with knots in the arms to each side of center. Note the bifurcation of the hazy spray to the N. A nice fishtail fans off to the S. Two galaxy companions, one brighter than the other, complete the triangle.
12h 41m 37.30s, +26° 04' 22.0" / 12h 41m 31.50s, +26° 02' 34.0" / 12h 41m 28.90s, +26° 05' 19.0" in Coma Berenices
Visual Magnitude: 13.88/14.32/15,42, Size: 1.5x0.5/1.0x0.9/0.5x0.5 arcmin, Type: Sc/S0-a/Sbc, Distance: 230/230/240 Mly
These galaxies are receding from us at 4734.6/4775.5/4930.0 km/second (1.65% light speed).

Arp 34
Image Details:
North is up, East is left (Up is 0.353° E of N)
15.8 x 15.8 arcmin; pixel scale 0.924arcsec/pixel
2020-05-20 01:33:42 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8
 

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Spiral galaxies with low surface brightness (LSB) companion on arms, Arp 37-48

Arp 37: Messier 77 - Cetus A
Bright elongated core with large glowing halo. This is a Seyfert galaxy: one with an extremely luminous core (an AGN) that emits intense non-thermal/non-stellar radiation (xray, radio, UV, & optical). I cannot detect LSB companions.
02h 42m 40.70s, -00° 00' 48.0" in Cetus
Visual Magnitude: 8.96, Size: 6.1 x 5.6 arcmin, Type: Sb, Distance: 33 Mly
This galaxy is receding from us at 1140.5 km/second (0.4% light speed).

Arp 37 / M 77 / Cetus A
Image Details:
West is up, South is left (Sorry!) (Up is 98.4° E of N)
39.2 x 28.8 arcmin; pixel scale 3.32 arcsec/pixel
2020-02-21 22:27:4 EST, Sharon GA
Mallincam DS287c, 10x2s exposures average-stacked, screenshot at 100 frames output
102mm refractor @ f/3.5, no filter
 

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Arp 38: NGC 6412
A dusty spiral with a distinct round bright patch (a "companion"?) in the rather chaotic northern arm; dark gaps between the arms to the N & W of the core.
17h 29m 37.50s, +75° 42' 16.0" in Draco
Visual Magnitude: 11.770, Size: 2.1 x 1.8 arcmin, Type: SABc, Distance: 77 Mly
This galaxy is receding from us at 1320.2 km/sec (0.4% light speed).

Arp 38
Image Details:
North is up, East is left (Up is 360° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.951 arcsec/pixel
2020-07-23 02:36:22 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Spiral galaxies with small high surface brightness companions on arms, Arp 49-78

Arp 49: NGC 5665
Off-center inner spiral, with much fainter outer arms to the SE side. Several bright knots in the vertical arm immediately to the E (left) of the core. One very bright arm hooks all the way around the W (right) side. A small bright object in E arm seems to have a dark backwash towards the center.
14h 32m 25.80s, +08° 04' 43.0" in Bootes
Visual Magnitude: 12.60, Size: 1.9 x 1.2 arcmin, Type: Sc, Distance: 57 Mly
This galaxy is receding from us at 2233.9 km/sec (0.7% light speed).

Arp 49
Image Details:
North is up, East is left (Up is 0.534° E of N)
14.2 x 14.2 arcmin, cropped; pixel scale 0.832 arcsec/pixel
2020-05-24 01:51:32.18 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 51: MCG-2-1-24 (with Arp 144: NGC 7828 / NGC 7829)
This faint face-on spiral galaxy, to the lower right of the image center, has a brighter, irregular core and an asymmetry to the haze billowing on its East side. The brightening streak in this wash might be ChaBG69, in the rather obscure (to me, at least) Chavira list of "blue galaxies". Zooming in on MCG-2-1-24 in the inverted image reveals a secret code being sent to us from the core of this distant galaxy - a clear letter "N".
00h 06m 16.7s, -13° 26' 53.0" in Cetus
Visual Magnitude: 15.0 Size: 0.8 x 0.6 arcmin, Type: SABb, Distance: unknown

Arp 144 & Arp 51
Image Details:
North is up, East is left (Up is 0.368° E of N)
15.8 x 15.8 arcmin, cropped; pixel scale 0.927 arcsec/pixel
2020-07-23 02:14:38 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Arp 68: NGC 7757
Diffuse galaxy with a bifurcated look to it. Core is elongated E-W. Star-like companion to the W (right) seems like it's becoming engulfed in the outer tidewaters of 7757.
23h 48m 44.67s, +04° 10' 10.7" in Pisces
Visual Magnitude: 12.77, Size: 1.8 x 1.3 arcmin, Type: SABc, Distance: 52 Mly
This galaxy is receding from us at 2956.0 km/sec (1.0% light speed).

Arp 68
Image Details:
South is up, East is left (Up is 181° E of N)
21.8 x 21.8 arcmin, cropped; pixel scale 1.28 arcsec/pixel
2020-06-19 08:34:08 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Arp 71: NGC 6045
Elongated edge-on galaxy with a wider curved tail on the W (right) end. Has a bright core. A tiny little companion is stuck on its snout to the East, giving it the appearance of a smoking Aladdin's lamp.
16h 05m 7.90s, +17° 45' 28.0" in Hercules
Visual Magnitude: 13.92, Size: 1.4 x 0.3 arcmin, Type: Sc, Distance: 490 Mly
This galaxy is receding from us at 10013.8 km/sec (3.3% light speed).

Arp 71
Image Details:
South is up, East is left (Up is 181° E of N)
23.6 x 23.6 arcmin, cropped; pixel scale 1.38 arcsec/pixel
2020-06-11 01:59:18 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 72: NGC 5996 / NGC 5994
Very asymmetric! Appears to have two arms pointing down (N), and one dimmer arm extending out on the other side (S) towards companion 5994. Elongated, bright, possibly a fused double core, with bright knots on either side.   
15h 46m 58.90s, +17° 53' 03.0" / 15h 46m 53.30s, +17° 52' 22.0" in Serpens
Visual Magnitude: 13.21/15.59, Size: 1.5x0.7/0.6x0.3 arcmin, Type: SBbc/SBbc, Distance: 170/170 Mly
These galaxies are receding from us at 3290.6/3381.5 km/sec (1.1% light speed)

Arp 72
Image Details:
South is up, East is left (Up is 180° E of N)
15.9 x 15.9 arcmin, cropped; pixel scale 0.929 arcsec/pixel
2020-05-19 02:38:48 UTC, Almeria, Spain
FLI PL16803, 2x60s exposures, SPA-2: 700mm reflector @ f/8

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Arp 76: Messier 90
Beautiful tilted spiral, with visible dark lanes encircling the core. Diffuse wispiness extends towards IC 3583. Companion IC 3583appears to have significant blow-back extending away from M90.
12h 36m 49.90s +13° 09' 48.0" in Virgo
Visual Magnitude: 9.36, Size: 9.1 x 3.8 arcmin, Type: Sab, Distance: 39 Mly
This galaxy is approaching us at -219.5 km/second.

Arp 76
Image Details:
North is up, East is left (Up is 28.1° E of N)
39 x 29.3 arcmin; pixel scale 3.25 arcsec/pixel
6/20/2020 23:41:16 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x5s exposures @ gain 22
102mm refractor @ f/3.5

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Arp 78: NGC 772
Slightly asymmetric/secondary brightening seen to the NW (upper right) of the bright core. Diffuse cloud without evident structure surrounds the core.
01h 59m 19.6s, +19° 00' 27" in Aries
Visual Magnitude: 9.84, Size: 4.6 x 2.5 arcmin, Type: Sb, Distance: 120 Mly
This galaxy is receding from us at 2440.7 km/second (0.8% light speed).

Arp 78 / NGC 772
Image Details:
West is up, South is left (Up is 80.1° E of N)
38.6 x 29.3 arcmin; pixel scale 3.31 arcsec/pixel
2020-02-21 22:05:39 EST, Sharon GA
Mallincam DS287c, 10x2s exposures average-stacked, screenshot at 100 frames output
102mm refractor @ f/3.5, no filter

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Spiral galaxies with large high surface brightness companions on arms, Arp 79-91

Arp 79: NGC 5490C
NGC 5490C is a sweet little face-on spiral with two well-defined arms. An elongated bright patch in the arm just below the core is reported to be its on-arm companion.
The twin IC galaxies in the top of the image are catalogued as Arp 117. Over 20 galaxies are in this image!

14h 10m 6.90s, +17° 36' 57.0" in Bootes
Visual Magnitude: 15.21, Size: 0.8 x 0.6 arcmin, Type: SBbc, Distance: 280 Mly
This galaxy is receding from us at 5646.5 km/second (1.9% light speed)

Arp 79 and Arp 117
Image Details:
North is up, East is left (Up is 0.26° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.947 arcsec/pixel
2020-08-15 20:44:36 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2  SPA-2: 700mm reflector @ f/8

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Arp 81: NGC 6621 / NGC 6622
Striking NE (top) arm loop which tapers to a very thin tip. Obvious tight S-shape curled structure to 6621. Companion 6622 is rounder with an elongated oval core and an asymmetric cloud, most visible on the side towards the tip of 6621's extending arm.   
18h 12m 55.30s, +68° 21' 48.0" / 18h 12m 59.50s, +68° 21' 19.0" in Draco
Visual Magnitude: 13.41/14.56, Size: 2.1x0.9/1.0x0.9 arcmin, Type: Sb/Sab, Distance: 310/310 Mly
These galaxies are receding from us at 6177.7/6284.0 km/sec (2.1% light speed)

Arp 81
Image Details:
North is up, East is left (Up is 360° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.952 arcsec/pixel
2020-05-19 02:25:55 UTC, Almeria, Spain
FLI PL16803, 2x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 84: NGC 5395 / NGC 5394 ("The Heron")
 
Very unusual spiral with wide arm reaching up to connect to comma-shaped companion 5394. Eastern arm (left) has sharp, bent-back "beak".
13h 58m 38.00s, +37° 58' 38.0" / 13h 58m 33.60s, +37° 27' 13.0" in Canes Venatici
Visual Magnitude: 11.49/12.86, Size: 2.5x1.2/2.6x1.1 arcmin, Type: SABb/SBb, Distance: 180/180 Mly
These galaxies are receding from us at 3469.4/3467.0 km/sec (1.2% light speed)

 
Arp 84
Image Details:
North is up, East is left (Up is 0.377° E of N)
15.2 x 15.2 arcmin, cropped; pixel scale 0.889 arcsec/pixel
2020-05-02 03:11:39 UTC, Almeria, Spain
FLI PL16803, 2x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 85: Messier 51 Whirlpool Galaxy / NGC 5194
Famous face-on spiral galaxy, "A Study in Star Dust". Prominent spiral arms, one broken with a sharp 90° foot. Long arm with distinct dark lane extends North (down) to connect with companion 5195.
13h 29m 52.70s, +47° 11' 43.0" in Canes Venatici
Visual Magnitude: 7.92, Size: 13.7 x 11.7 arcmin, Type: SABb, Distance: 28 Mly
This galaxy is receding from us at 460.8 km/sec

Arp 85
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-04-29 03:27:38 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Arp 90: NGC 5930 / NGC 5929
Rather small galaxy pair with bright cores. NGC 5930 appears to have a faint wide portion that extends asymmetrically towards the NW (lower right).
15h 26m 07.90s, +41° 40' 34.0" / 15h 26m 06.10s, +41° 40' 14.0" in Bootes
Visual Magnitude: 12.31/14.07, Size: 1.9x0.8/0.9x0.8 arcmin, Type: SABa/Sa, Distance: 140/130 Mly
These galaxies are receding from us at 2589.3/2551.7 km/sec (0.9% light speed)

Arp 90
Image Details:
South is up, East is left (Up is 180° E of N)
15.7 x 15.7 arcmin, cropped; pixel scale 0.918 arcsec/pixel
2020-05-02 03:18:09 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 91: NGC 5954 / NGC 5953
 A long extended spiral (5954) with knots, a prominent dark lane, and an extension bridge to bright round companion 5953.
15h 34m 35.10s, +15° 11' 57.0" / 15h 34m 32.40s, +15° 11' 38.0" in Serpens
Visual Magnitude: 12.81/12.98, Size: 1.0x0.5/1.5x1.1 arcmin, Type: SABc/S0-a, Distance: 100/100 Mly
These galaxies are receding from us at 1921.7/1969.8 km/sec (0.6%/0.7% light speed)

Arp 91
Image Details:
South is up, East is left (Up is 180° E of N)
16.7 x 16.7 arcmin, cropped; pixel scale 0.981 arcsec/pixel
2020-04-30 03:45:54 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Spiral galaxies with elliptical companions on arms, Arp 92-101

Arp 92: NGC 7603 (AGN/Seyfert1) / NGC 7603B
When I chose this target I didn't realize how controversial this galaxy pair has been. If you take a look at their distances & radial velocities,in blue below, you'll get a hint as to why. Halton Arp claimed there was a filament connecting the ESE tip of NGC 7603 to NGC 7603B. However, this implies that they are interacting despite their discordant redshift (z) values. His subsequent theory regarding "non-cosmological" redshifts created quite a controversy after his 1998-2003 publications. The majority of astronomers now consider this connectedness to be an merely optical illusion. Looking closely, I do see hints of larger circular whorls in the region South of 7603 and overlaying 7603B, but I do not see an actual connecting bridge between the two. Admittedly, this is a single 60-second exposure with only minimal processing. There are noticeable bright streaks in the ESE haze of 7603 which are reported to be emission line objects. There is also a tiny bright arc curving through the North end of 7603B - perhaps it has a shock wave of its own, just far far away?
23h 18m 56.70s, +00° 14' 38.0" / 23h 19m 00.00s, +00° 14' 08.0" in Pisces
Visual Magnitude: 14.01/16.61, Size: 1.2x0.6/0.4x0.3 arcmin, Type: Sb/E, Distance: 420/810 Mly
These galaxies are receding from us at 8842.2 (z=0.029297) / 16699.4 (z=0.0545) km/sec (2.9% / 5.6% light speed)

Arp 91
Image Details:
North is up, East is left (Up is 0.295° E of N)
14 x 14 arcmin, cropped; pixel scale 0.822 arcsec/pixel
2020-07-22 01:40:37 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure,bin2 SPA-2: 700mm reflector @ f/8

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Arp 94: NGC 3227 / NGC 3226
Elongated spiral (3227) with round elliptical companion (3226), both with bright cores.
10h 23m 30.6s, +19° 51' 54.0" / 10h 23m 27.0s, +19° 53' 55.0" in Leo
Visual Magnitude: 10.69/11.4, Size: 4.0x1.9/3.1 x 2.3 arcmin, Type: E/E, Distance: 76/76 Mly
These galaxies are receding from us at 1148.3/1312.7 km/second (0.4% light speed).

Arp 94 /  NGC 3227 + NGC 3226
Image Details:
East is up, North is left (Up is 279° E of N)
39.6 x 29.7 arcmin; pixel scale 3.3 arcsec/pixel
2020-02-21 23:53:37 EST, Sharon GA
Mallincam DS287c, 5x8s exposures average-stacked, screenshot at 100 frames output
102mm refractor @ f/3.5, no filter

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Arp 96:  UGC 3528A / UGC 3526
Two small galaxies with bright cores, one an S-shaped spiral, the other a round elliptical. Although not detectable here, one can imagine the right, delicately-curled tip of 3528A might extend towards companion 3526.
07h 02m 27.30s, +86° 34' 47.0" and 07h 03m 22.10s, +86° 33' 28.0" in Cepheus
Visual Magnitude: 15.23/14.88, Size: 0.9x0.5/0.9x0.2 arcmin, Type: SBc/E-S0, Distance: 230/240 Mly
These galaxies are receding from us at 4549.2/4739.5 km/sec (1.6% light speed)

Arp 96
Image Details:
North is up, East is left (Up is 1.39° E of N)
12.7 x 12.7 arcmin,cropped; pixel scale 0.745 arcsec/pixel
2020-03-14 21:30:52 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Arp 99: NGC 7550
Asymmetrically elongated spiral 7549 pirouettes above bright elliptical 7550 and its smaller spiral companion 7547.
An interloper is photobombing this 60-second image - do you think it's a tumbling meteor or a man-made object?

23h 15m 16.10s, +18° 57' 41.0" in Pegasus
Visual Magnitude: 12.04, Size: 1.4 x 1.4 arcmin, Type: E-S0, Distance: 250 Mly
This galaxy is receding from us at 5121.2 km/sec (1.7% light speed)

Arp 99
Image Details:
North is up, East is left (Up is 0.578° E of N)
26.7 x 26.7 arcmin, cropped; pixel scale 1.56 arcsec/pixel
2020-06-25 07:36:47 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60 exposure, bin2

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Arp 101: UGC 10169 / UGC 10164
Elongated spiral 10169 with its elliptical companion 10164. 10169 has a very faint but long tail extending away to the NE (lower left). Possibly a faint hint of a bridge between the two galaxies.
16h 04m 31.8s, +14° 49' 09.0" / 16h 04m 28.2s, +14° 46' 57.0" in Serpens
Visual Magnitude: 14.63/15.30, Size: 2.4x0.3/1.1x0.7 arcmin, Type: S0/E-S0, Distance: 230/230 Mly
These galaxies are receding from us at 4665.3/4664.2 km/sec (1.6%/1.5% light speed)

Arp 101
Image Details:
South is up, East is left (Up is 181° E of N)
20.5 x 20.5 arcmin, cropped; pixel scale 1.2 arcsec/pixel
2020-06-15 05:05:17 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60 exposure, bin2

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Elliptical galaxies connected to spiral galaxies, Arp 102-108

Arp 104: NGC 5216/5218 Keenan's System
Distorted spiral 5216 shows detached sections, most prominently on the W side with an absorption lane (or detached arm) on the E. Round elliptical companion 5216 seems to have a somewhat oval cloud, slightly slanted, surrounding its bright core.
13h 32m 06.90s, +62° 42' 03.0"/ 13h 32m 10.40s, +62° 46' 04.0" in Ursa Major
Visual Magnitude: 12.68/13.09, Size: 1.7x1.1/1.8x1.2 arcmin, Type: E/SBb, Distance: 150/160 Mly
These galaxies are receding from us at 2923.9/2860.4 km/sec (1% of light speed)

Arp 104
Image Details:
South is up, East is left (Up is 182° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-05-20 03:11:57 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Elliptical galaxies with repelling spiral arms, Arp 109-112

Arp 111: NGC 5421 (UGC 8941)
The southern arm of NGC 5421 has crashed into smaller galaxy UGC8941A, smooshing it back up to the NE. A good bit of tidal spray flares out from the arm towards the N. A condensed bright patch on NGC 5421's NW arm is a small embedded elliptical companion. A raggedy distorted galaxy group dangles off to the south.
14h 01m 41.40s, +33° 49' 37.0" in Canes Venatici
Visual Magnitude: 14.38, Size: 1.2x0.7 arcmin, Type: Sc, Distance: 390 Mly
This galaxy group is receding from us at 7893.7 km/sec (2.6% of light speed)

Arp 104
Image Details:
North is up, East is left (Up is 0.295° E of N)
15 x 15 arcmin; pixel scale 0.88 arcsec/pixel
2020-08-16 00:57:06 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2; SPA-2: 700mm reflector @ f/8

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Elliptical galaxies close to and perturbing spiral galaxies, Arp 113-132

Arp 114: NGC 2300 (with Arp 25, NGC 2276)
Big ol' fat elliptical NGC 2300 perturbing delicate spiral NGC 2276.

07h 32m 20.50s, +85° 42' 32.0" in Cepheus
Visual Magnitude: 11.11, Size: 3.0 x 2.3 arcmin, Type: E-S0, Distance: 100 Mly
This galaxy is receding from us at 1917.4 km/second (0.4% light speed).

Arp25 and Arp 114
Image Details:
South is up, East is left (Up is 180° E of N)
18.3 x 18.3 arcmin, cropped; pixel scale 1.07 arcsec/pixel
2020-05-01 02:35:25 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 116: Messier 60
Another big elliptical, M60, making trouble with little passing spiral 4847. Another elliptical/spiral pair also having a dust-up to the SW: elongated elliptical 4638 and dim spiral 4637.
12h 43m 40.00s +11° 33' 10.0" in Virgo
Visual Magnitude: 8.79, Size: 6.8 x 5.4 arcmin, Type: E, Distance: 56 Mly
This galaxy is receeding from us at 1107.5 km/second (0.4% light speed).

Arp 116
Image Details:
North is up, East is left (Up is 359° E of N)
39.2 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 0:31 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x5s exposures @ gain 22
102mm refractor @ f/3.5

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Arp 117: IC 982 / IC 983
In the upper half of this image, diffuse spiral IC 983 seems to float in a circular halo near bright elliptical IC 982.
In the center of the image is Arp 79. Over 20 galaxies are in this image!

14h 10m 4.40s, +17° 44' 2.0" / 14h 09m 59.10s, +17° 41' 46.0" in Bootes
Visual Magnitude: 11.91 / 14.53, Size: 2.3x2.0/0.9x0.9 arcmin, Type: SBbc/SB0, Distance: 270/270 Mly
These galaxies are receding from us at 5442.5/5454.3 km/second (1.8% light speed)

Arp 79 and Arp 117
Image Details:
North is up, East is left (Up is 0.26° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.947 arcsec/pixel
2020-08-15 20:44:36 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2  SPA-2: 700mm reflector @ f/8

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Arp 122: NGC 6040 A/B
In this busy neighborhood of galaxies, the tip of lazy S-shaped spiral NGC 6040A cradles star-like elliptical NGC 6040B (lower right).
16h 04m 26.80s, +17° 45' 01.0" / 16h 04m 26.50s, +17° 44' 31.0" in Hercules
Visual Magnitude: 13.28/14.27, Size: 1.4x0.4/0.9x0.7 arcmin, Type: SABc/S0-a, Distance: 600 Mly
These galaxies are receding from us at 12273.5/12259.8 km/sec (4.1/4.1% light speed)

Arp 122
Image Details:
South is up, East is left (Up is 181° E of N)
23.6 x 23.6 arcmin, cropped; pixel scale 1.38 arcsec/pixel
2020-06-11 01:59:18 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 124: NGC 6361
Big, barge-like edge-on spiral floats near flotsam-like, AGN-containing, elliptical companion PGC 60040 (MCG+10-25-3). There's just a hint of a bridge between the two coming off of the companion.
17h 18m 41.10s, +60° 36' 29.0" in Draco
Visual Magnitude: 13.79, Size: 2.1 x 0.6 arcmin, Type: Sb, Distance: 200 Mly
This galaxy is receding from us at 3798.9 km/second (1.3% light speed)

Arp 124
Image Details:
South is up, East is left (Up is 180° E of N)
16.4 x 16.4 arcmin, cropped; pixel scale 0.964 arcsec/pixel
2020-06-20 02:37:44 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Galaxies with nearby fragments, Arp 133-136

Arp 133: NGC 541
with Arp 308 (NGC 545 & 547) + more than a dozen other galaxies
NGC 541 is a bright elliptical with associated fragments, visible as a cluster of broken pieces on the side facing the 547/545 pair (click to view). The largest of these fragments is a mag 16.1 distorted galaxy, "Minkowski's Object".
01h 25m 44.3s, -01° 22' 46.0" in Cetus
Visual Magnitude: 12.14, Size: 2.2 x 1.5 arcmin, Type: E, Distance: 250 Mly
This galaxy is receding from us at 5383.5 km/sec (1.8% light speed)

Arp 133 and Arp 308
Image Details:
South is up, East is left (Up is 181° E of N)
31.6 x 31.6 arcmin; pixel scale 1.85 arcsec/pixel
2020-06-20 09:53:23 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Arp 134:  Messier 49
Large elliptical M49 has a pronounced surrounding haze, with a bright star on its E side. Several fragments are reported around this galaxy. Labeled in this image is one of the tiny fragments, NGC 4467.
12h 40m 46.70s, +07° 59' 59.0" in Virgo
Visual Magnitude: 8.37, Size: 10.2 x 8.4 arcmin, Type: E, Distance: 54 Mly
This galaxy is receding from us at 978.7 km/sec (0.3% light speed)

Arp 134 / M49
Image Details:
South is up, East is left (Up is 170° E of N)
39.2 x 29.4 arcmin; pixel scale 3.27 arcsec/pixel
2020-06-14 01:57:29 EDT, Sharon GA
Mallincam DS287c, 10x5s exposures average-stacked, screenshot at 100 frames output
102mm refractor @ f/3.5, no filter

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Arp 135:  NGC 1023
Bright, elongated elliptical galaxy with extended E-W diffuse regions. None of the fragmented sections were evident in this image.
02h 40m 24.00s, +39° 03' 48.0" in Perseus
Visual Magnitude: 8.55, Size: 7.4 x 3.1 arcmin, Type: E-S0, Distance: 31 Mly
This galaxy is receding from us at 645.0 km/sec

Arp 135 / NGC 1023
Image Details:
West is up, South is left (Up is 98.4° E of N)
39.4 x 28.9 arcmin; pixel scale 3.3 arcsec/pixel
2020-02-21 23:10:48 EST, Sharon GA
Mallincam DS287c, 10x5s exposures average-stacked, screenshot at 200 frames output
102mm refractor @ f/3.5, no filter

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Arp 136: NGC 5820
Bright, oval-shaped elliptical galaxy surrounded by several small, dim fragments (detectable here but unlabeled), all ~mag 18.
14h 58m 39.80s, +53° 53' 10.0" in Bootes
Visual Magnitude: 12.24, Size: 1.7x1.1 arcmin, Type: S0, Distance: 170 Mly
This galaxy is receding from us at 3330.6 km/sec (1.1% of light speed)

Arp 136
Image Details:
North is up, East is left (Up is 0.187° E of N)
18.1 x 18.1 arcmin, cropped; pixel scale 1.68 arcsec/pixel
2020-04-29 03:38:07 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Material emanating from elliptical galaxies, Arp 137-145

Arp 140: NGC 275 / NGC 274
Bright, round NGC 274 shares an outer cloud of stars with highly disturbed NGC 275. Note the chaotic core of 275!
00h 51m 04.5s, -07° 03' 59.0" / 00h 51m 041.9s, -07° 03' 25.0 in Cetus
Visual Magnitude: 12.81/12.38, Size: /1.8x1.4/1.3x1.1 arcmin, Type: SBc/SBc, Distance: 79/63 Mly
These galaxies are receding from us at 1748.2/1728.2 km/sec (0.6/0.6% light speed)

Arp 140
Image Details:
North is up, East is left (Up is 0.647° E of N)
23.9 x 23.9 arcmin, cropped; pixel scale 1.4 arcsec/pixel

2020-06-21 09:57:46 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 144: NGC 7828 / NGC 7829 (with Arp 51: MCG-2-1-24)
NGC 7828 looks like a bright little rocket running into the backside of a comet. The "comet" is the sharp bend to the NW, the "rocket" is the bright, highly disturbed, elongated core with streaks of "fuel" propelling it from the SE. It is classified as a spiral, but it is so severely crushed that it looks like an elliptical. NGC 7829 is quite bright and round, with a good bit of blowback continuing off to the E.
00h 06m 27.1s, -13° 24' 58.0" / 00h 06m 29.0s, -13° 25' 14.0" in Cetus
Visual Magnitude: 14.37/13.87 Size: 2.1x0.8/2.1x0.8 arcmin, Type: SAd/S0-a, Distance: 270/270 Mly
These galaxies are receding from us at 5732.3/5705.7 km/sec (1.9% of light speed)

Arp 144 & Arp 51
Image Details:
North is up, East is left (Up is 0.368° E of N)
15.8 x 15.8 arcmin, cropped; pixel scale 0.927 arcsec/pixel
2020-07-23 02:14:38 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with associated rings, Arp 146-148

Arp 146: PGC 509
Look at these two tiny smoke rings! Ring B shows distinct brightening where it contacts Ring A. The inverted image shows this area as two bright knots with evidence of a bridge between the two galaxies. Both galaxies are very, very distant (1100 million light years!) and are travelling away from us at 7.5% light speed.
00h 06m 42.9s, -06° 38' 16.7" in Cetus
Visual Magnitude: 16.3, Size: 0.4 x 0.3 arcmin, Type: I, Distance: 1100 Mly
This galaxy is receding from us at 22615.0 km/sec (7.5% light speed)

Arp 146
Image Details:
North is up, East is left (Up is 0.305° E of N)
13.2 x 13.2 arcmin, cropped; pixel scale 0.771 arcsec/pixel
2020-07-28 01:25:54 UTC, Almeria, Spain
FLI PL16803, 1x60s, bin2  SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with jets, Arp 149-152

Arp 149: IC 803
IC 803 appears to be two galaxies caught in the act of colliding. The East one (left) is elongated & multinucleated; the West one (right) is round & bright. A hazy cloud spray is seen between the two, also extending as a fine jet to the SW from the round one on the right.
12h 39m 37.5s, +16° 35' 19.0" in Coma Bernices
Visual Magnitude: 15.31, Size: 0.9 x 0.1 arcmin, Type: Sbc, Distance: 380 Mly
This galaxy is receding from us at 7795.5 km/sec (2.6% light speed)

Arp 149
Image Details:
North is up, East is left (Up is 0.767° E of N)
22.3 x 22.3 arcmin, cropped; pixel scale 1.31 arcsec/pixel
2020-06-15 00:41:53 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 152: Messier 87 , "Virgo A" radio source
Very bright elliptical galaxy with a jet coming out of the core to the NW @ PA 300° (2 o'clock). Super-sizing this image actually does show a bulge at that position (click image to view). Maybe that's it?
12h 30m 49.50s +12° 23' 26.0" in Virgo
Visual Magnitude: 8.67, Size: 7.1 x 6.7 arcmin, Type: E, Distance: 55 Mly
This galaxy is receeding from us at 1283.1 km/second (0.4% light speed).

Arp 152
Image Details:
North is up, East is left (Up is 28.2° E of N)
39.2 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/20/2020 23:25 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x5s exposures @ gain 20
102mm refractor @ f/3.5

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Amorphous galaxies disturbed by interior absorption, Arp 153-160

Arp 153: NGC 5128 - Centaurus A radio source
stunning elliptical galaxy overlaid by a superb, backlit dust lane. Notice the broken mottling of the dust lane and its back-hook inwards at the western end. The blazing core seems to be stretched N-S, and is almost rectangular. A huge collison of two galaxies must have happened here.
13h 25m 27.6s  -43° 01' 09" in Centaurus
Visual Magnitude: 6.64, Size: 25.9 x 19.8 arcmin, Type: S0, Distance: 12 Mly
This galaxy is receding from us at 551.9 km/second (0.2% light speed).

NGC 5128 - Centaurus A
Image Details:
North is up, East is left (Up is 357° E of N)
42.3 x 28.2 arcmin; pixel scale 1.27 arcsec/pixel
2019-05-06 14:50:53 UTC, 0.43m Dubbo 5x60s

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Arp 155: NGC 3656
Bright nucleus with bifurcation or dust lane running N-S in the center. Nucleus is slightly tilted up to the NW. Large ghost-like extension of the star cloud southwards. Looks sort of like a baby in papoose.
11h 23m 38.70s, 53° 50' 32.0" in Ursa Major 
Visual Magnitude: 13.31, Size: 1.5 x 1.0 arcmin, Type: S?, Distance: 150 Mly
This galaxy is receding from us at 2871.2 km/sec

Arp 155
Image Details:
North is up, East is left (Up is 0.502° E of N)
19.3 x 19.3 arcmin; pixel scale 1.13 arcsec/pixel
2020-05-20 01:09:51 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Arp 157: NGC 520, the Flying Ghost Galaxy
A peanutty wiggle in this compressed spiral. A curved dark lane outlines the split between the much brighter condensed N part and the diffuse wavy S part. It looks like two galaxies must have pancaked together.
01h 24m 34.70s, +03° 47' 39.0" in Pisces
Visual Magnitude: 11.43, Size: 4.1 x 1.6 arcmin, Type: Sa, Distance: 100 Mly
This galaxy is receding from us at 2161.6 km/sec (0.7% light speed)

Arp 157
Image Details:
North is up, East is left (Up is 0.578° E of N)
21.4 x 21.4 arcmin, cropped; pixel scale 1.25 arcsec/pixel
2020-06-27 08:24:08 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 160: NGC 4194  The Medusa Merger Galaxy
Irregular, with a bright (disturbed?) core, a fishtail to the S, and a light spray to the N. Dark absorption bite out of the NE side.
12h 14m 09.60s, 54° 31' 35.0" in Ursa Major
Visual Magnitude: 12.44, Size: 1.6 x 1.1 arcmin, Type: SBm, Distance: 130 Mly
This galaxy is receding from us at 2556.1 km/sec

Arp 160
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-04-29 03:16:01 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with diffuse filaments, Arp 161-166

Arp 162: NGC 3414
Very bright core with obvious diagonal (NE-SW) filament in its otherwise faint cloud.
10h 51m 16.20s, 27° 58' 30.0" in Leo Minor
Visual Magnitude: 11.12, Size: 2.7 x 1.4 arcmin, Type: S0, Distance: 81 Mly
This galaxy is receding from us at 1460.2 km/sec

Arp 162
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-04-29 01:03:07 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 163: NGC 4670
Similar in structure to Apr 162, but filament is oriented E-W. Core is an elongated oval. Elliptical galaxy NGC 4673 is nearby
12h 45m 17.20s, 27° 07' 32.0" in Coma Berenices
Visual Magnitude: 12.79, Size: 1.0 x 0.8 arcmin, Type: SBa, Distance: 60 Mly
This galaxy is receding from us at 1085.8 km/sec

Arp 163
Image Details:
South is up, East is left (Up is 180° E of N)
15.4 x 15.4 arcmin; pixel scale 0.901 arcsec/pixel
2020-05-20 01:21:27 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with diffuse counter-tails, Arp 167-172

Arp 171: NGC 5178 / IC 1042
Nice pair of galaxies with merging dust clouds. IC 1042 has an asymmetry to its cloud, with some darkness to the NE side. Very tiny companion (0.3'x0.2') is visible to the SE of IC 1042, looks almost stellar but does have some dust surrounding it, detectable at high zoom.
14h 40m 42.80s, +03° 27' 55.0" / 14h 40m 39.00s, +03° 28' 11.0" in Virgo
Visual Magnitude: 14.27/14.70, Size: 1.5x1.1/1.1x1.1 arcmin, Type: E-S0/S0, Distance: 400/390 Mly
These galaxies are receding from us at 8197.0/7989.7 km/sec (2.7%/2.7% light speed)

Arp 171
Image Details:
South is up, East is left (Up is 181° E of N)
21.6 x 21.6 arcmin, cropped; pixel scale 1.26 arcsec/pixel
2020-06-15 04:56:30 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin 2

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Arp 172: IC 1178
Very faint and small pair in SW corner of this field. Similar round appearance but one large, one small.
16h 05m 33.10s, +17° 36' 05.0" in Hercules
Visual Magnitude: 13.95, Size: 1.3 x 0.7 arcmin, Type: E-S0, Distance: 500 Mly
This galaxy is receding from us at 10238.2 km/sec (3.4% light speed)

Arp 172
Image Details:
South is up, East is left (Up is 181° E of N)
23.6 x 23.6 arcmin, cropped; pixel scale 1.38 arcsec/pixel
2020-06-11 01:59:18 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Amorphous galaxies with narrow counter-tails, Arp 173-178

Arp 176: NGC 4933B / NGC 4933A
A pretty pair with a slight arc to their now-shared dust cloud.  A fine absorption band crosses the face of 4933B. Smaller 4933A has faint halo.  Very tiny (0.4') 4933C is visible as a ghostly condensation, almost like a detached segment, just to the E of 4933B.
13h 03m 54.60s, -11° 30' 21.0" / 13h 03m 57.00s, -11° 29' 48.0" in Virgo
Visual Magnitude: 12.7/15.2, Size: 1.8x1.0/1.0x0.8 arcmin, Type: S0-a/E, Distance: 150/150 Mly
These galaxies are receding from us at 3168.4/3228.3 km/sec (1.1% light speed)

Arp 176
Image Details:
South is up, East is left (Up is 181° E of N)
14.8 x 14.8 arcmin, cropped; pixel scale 0.869 arcsec/pixel
2020-06-10 23:02:13 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Amorphous galaxies with narrow filaments, Arp 179-193

Arp 182: NGC 7674 /NGC 7674A
This is part of Hickson 96, a group of 4 galaxies (H96 A-D). All four are visible here. The biggest and brightest of the group is spiral NGC 7674 (96A). A bit of a bow-shock is seen in the dust clouds around the tiny companions to the E of 96A
23h 27m 56.70s, +08° 46' 44.0" / 23h 27m 58.80s, +08° 46' 58.0" in Pegasus
Visual Magnitude: 13.18/14.24, Size: 1.4x1.0/0.3x0.3 arcmin, Type: SBbc/S?, Distance: 420/410 Mly
These galaxies are receding from us at 8737.4/8664.4 km/sec (2.9/2.9% light speed)

Arp 182
Image Details:
North is up, East is left (Up is 0.655° E of N)
25.8 x 25.8 arcmin, cropped; pixel scale 1.51 arcsec/pixel
2020-06-21 09:12:15 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Arp 185: NGC 6217
Bright multi-nucleated core with a dusty filament wrapping around the N/NE side. A thick dust band points relatively straight from the core to the NW, while the SE edge of the cloud is rounded and rather abruptly capped off at the edge.
16h 32m 39.20s +78° 11' 53.0" in Ursa Major
Visual Magnitude: 11.24, Size: 2.2 x 1.6 arcmin, Type: Sbc, Distance: 81 Mly
This galaxy is receeding from us at 1362.4 km/second (0.5% light speed).

Arp 185
Image Details:
North is up, East is left (Up is 359° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 1:37 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x7s exposures @ gain 22
102mm refractor @ f/3.5

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Arp 189: NGC 4651
Face-on spiral with wispy arms to the S. Bright oval core with some structure evident.
12h 43m 42.70s +16° 23' 37.0" in Coma Berenices
Visual Magnitude: 10.61, Size: 3.9 x 2.6 arcmin, Type: Sc, Distance: 76 Mly
This galaxy is receeding from us at 799.8 km/second (0.3% light speed).

Arp 189
Image Details:
North is up, East is left (Up is 359° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 00:17:31 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 5 minutes of live-stacking 10x5s exposures @ gain 22
102mm refractor @ f/3.5

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Amorphous galaxies with material ejected from nuclei, Arp 194-208

Arp 199: NGC 5544 / NGC 5545
Dramatic pair in full collision mode. Elongated NGC 5545 is stabbing into round NGC 5544. Mottling seen in E end of 5544. Halo of 5544 is a bit broken and shows brightness where 5545's cloud has entered into it.
14h 17m 02.50s, +36° 34' 18.0" / 14h 17m 05.20s, +36° 34' 30.0" in Bootes
Visual Magnitude: 13.89/13.19, Size: 1.0x1.0/1.0x0.3 arcmin, Type: S0-a/SBc, Distance: 160/160 Mly
This galaxy is receding from us at 3159.1/3078.8 km/sec (1.0% light speed)

Arp 199
Image Details:
South is up, East is left (Up is 180° E of N)
16.6 x 16.6 arcmin, cropped; pixel scale 0.975 arcsec/pixel
2020-05-01 03:11:03 UTC, Almeria, Spain
FLI PL16803, 1x90s exposure, SPA-2: 700mm reflector @ f/8

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Arp 202: NGC 2719/ NGC 2719A
Parallel galaxies side-swiping each other! Longer 2719 has bright core; smaller 2719A appears multi-nucleated and chaotic, with a little detached tail bit on its NW end. Faint galaxy NGC 2724 at the eastern edge of this image is an unrelated but intriguing face-on spiral with an prominent S-hook arm on its East side.
09h 00m 15.70s, +35° 43' 39.0" / 9h 00m 15.90s, +35° 43' 13.0" in Lynx
Visual Magnitude: 13.72/14.50, Size: 1.2x0.3/0.5x0.4 arcmin, Type: IB/I, Distance: 160/150 Mly
This galaxy is receding from us at 3159.1/3080.2 km/sec

Arp 202
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-27 03:36:37 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with irregularities, absorption and resolution, Arp 209-214

Arp 209: NGC 6052 (=NGC 6064)
Arrowhead-shaped merger of galaxies. Double nucleus of gives the core an elongated look E-W, while the dust clouds form a N-S "V"-shape. Looks like the head of a scrawny rat or a possum, captured staring at us in the dark.
16h 05m 12.60s, +20° 32' 31.0" in Hercules
Visual Magnitude: 14.10, Size: 0.9 x 0.7 arcmin, Type: Sc/P, Distance: 220 Mly
This galaxy is receding from us at 4681.6 km/sec (1.6% light speed)

Arp 209
Image Details:
South is up, East is left (Up is 180° E of N)
17.6 x 17.6 arcmin, cropped; pixel scale 1.03 arcsec/pixel
2020-05-01 03:35:51 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 212: NGC 7625
A disturbed spiral galaxy with a very bright core and an enveloping halo. Note the dark absorption tubes cutting through, especially prominent on the SE end.
16h 05m 12.60s, +20° 32' 31.0" in Pegasus
Visual Magnitude: 12.21, Size: 1.5 x 1.4 arcmin, Type: Sa, Distance: 83 Mly
This galaxy is receding from us at 1630.6 km/sec (0.5% light speed)

Arp 212
Image Details:
North is up, East is left (Up is 0.29° E of N)
15 x 15 arcmin, cropped; pixel scale 0.879 arcsec/pixel
2020-07-19 01:27:53 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure,bin2 SPA-2: 700mm reflector @ f/8

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Arp 214: NGC 3718
This was an unexpectedly pretty galaxy with a distinct S-shaped absorption structure running through the center. Nice wispiness of both an upper tail extending N and a bottom tail extending S. Appears to possibly be interacting with NGC 3729 to the NE.
11h 32m 33.38s +53° 04' 08.9" in Ursa Major -  a LINER (Low-Ionization Nuclear Emission-line Region) galaxy
Visual Magnitude: 10.58, Size: 4.7 x 2.3 arcmin, Type: Sa, Distance: 58 Mly
This galaxy is receeding from us at 992.8 km/second (0.3% light speed).

Arp 214
Image Details:
North is up, East is left (Up is 359° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
6/21/2020 01:08:19 EDT, Sharon GA
Mallincam DS287c, screenshot taken at 10 minutes of live-stacking 10x7s exposures @ gain 22
102mm refractor @ f/3.5

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Amorphous galaxies with adjacent loops, Arp 215-220

Arp 216: NGC 7679 / NGC 7682
NGC 7682 has a very distinct inner halo surrounding its bright core extending NW-SE, making it look like a spinner needle in a compass. NGC 7679 is larger and has a bright round core. Looking closer, the East side of 7679 has several faint asymmetric loops and little companion patches evident.
23h 28m 46.70s, 03° 30' 4.0" / 23h 28m 46.70s, 03° 30' 4.0" in Pisces
Visual Magnitude: 12.88/12.97, Size: 1.2x0.8/1.1x1.1 arcmin, Type: S0-a/Sab, Distance: 240/240 Mly
These galaxies are receding from us at 5140.7/5118.0 km/sec (1.7% light speed)

Arp 217
Image Details:
North is up, East is left (Up is 0.388° E of N)
16.8 x 16.8 arcmin, cropped; pixel scale 0.982 arcsec/pixel
2020-07-22 01:51:23 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Arp 217: NGC 3310
Bright core with evidence of disruption. A wide outer dust halo arcs noticeably around the E side, with a large dark gap between it and the nucleus. A bright knot is visible in the dust cloud S of the core. Knots and tails are visible on the N side of the core. Another small dense region is evident in the dust immediately S of the core.
10h 38m 45.90s, 53° 30' 12.0" in Ursa Major
Visual Magnitude: 10.95, Size: 1.8 x 1.7 arcmin, Type: SABb, Distance: 55 Mly
This galaxy is receding from us at 990.5 km/sec

Arp 217
Image Details:
North is up, East is left (Up is 0.385° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-27 04:12:05 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Amorphous galaxies with amorphous spiral arms, Arp 221-226

Arp 222: NGC 7727
Extremely bright, slightly oblate, core with a little bleeding seen on the S side. Spiral structure of the galaxy suggested only by darkened areas in the cloud (E) with edges detected on the brighter areas on the W side.
23h 39m 53.80s, -12° 17' 34.0" in Aquarius
Visual Magnitude: 10.61, Size: 3.6 x 2.8 arcmin, Type: SABa, Distance: 84 Mly
This galaxy is receding from us at 1857.3 km/sec (0.6% light speed)

Arp 222
Image Details:
North is up, East is left (Up is 0.594° E of N)
22.9 x 22.9 arcmin, cropped; pixel scale 1.34 arcsec/pixel
2020-06-21 06:28:49 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 223: NGC 7585
Bright oval core, not much detail in surrounding dust cloud. Slight dimness seen in patchy regions of the cloud.
23h 18m 01.3s, -04° 39' 02.0" in Aquarius
Visual Magnitude: 11.49, Size: 2.5 x 1.9 arcmin, Type: S0-a, Distance: 160 Mly
This galaxy is receding from us at 3458.0 km/sec (1.2% light speed)

Arp 223
Image Details:
North is up, East is left (Up is 0.603° E of N)
25.7 x 25.7 arcmin, cropped; pixel scale 1.51 arcsec/pixel
2020-06-21 06:40:06 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 225: NGC 2655
Bright oval core. Very faint amorphous spiral. Core has area of absorption on the SW edge, making it look almost like it has a fused double nucleus
08h 55m 38.40s, +78° 13' 24.0" in Camelopardalis
Visual Magnitude: 10.05, Size: 3.9 x0 2.1 arcmin, Type: S0-a, Distance: 79 Mly
This galaxy is receding from us at 1385.1 km/sec

Arp 225
Image Details:
North is up, East is left (Up is 0.557° E of N)
15.5 x 15.5 arcmin, cropped; pixel scale 0.907 arcsec/pixel
2020-04-30 02:49 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Galaxies with concentric rings, Arp 227-232

Arp 230: IC 51
 Note appearance of a N-S inner shell and a bright inner E-W bar/halo that looks like Saturn's rings. Hint of a small detached fragment on the N side of the outer cloud shell.
00h 46m 24.2s, -13° 26' 32.0" in Cetus
Visual Magnitude: 13.75, Size: 1.7x1.1 arcmin, Type: S0, Distance: 77 Mly
This galaxy is receding from us at 1716.1 km/sec (0.6% light speed)

Arp 230
Image Details:
North is up, East is left (Up is 359° E of N)
20.7 x 20.7 arcmin, cropped; pixel scale 1.21 arcsec/pixel
2020-07-17 07:42:29 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Amorphous galaxies with the appearance of fission, Arp 233-256

Arp 233: UGC 5720
Very bright core, with a slightly oval shape. Hint of a double-bubble nucleus, with a very slight dip or darkening at the center of the N edge..
10h 32m 31.90s, +54° 24' 04.0" in Ursa Major
Visual Magnitude: 12.73, Size: 1.1 x0 0.9 arcmin, Type: I, Distance: 79 Mly
This galaxy is receding from us at 1441.4 km/sec (0.5% light speed)

Arp 233
Image Details:
North is up, East is left (Up is 0.354° E of N)
15.6 x 15.6 arcmin, cropped; pixel scale 0.916 arcsec/pixel
2020-06-08 21:42:38 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 234: NGC 3738
Broken up core with irregular knots the dust cloud. Absorption tubes visible.
11h 35m 48.80s, +54° 31' 28.0" in Ursa Major
Visual Magnitude: 11.32, Size: 2.3 x0 1.6 arcmin, Type: I, Distance: 17 Mly
This galaxy is receding from us at 224.5 km/sec

Arp 234
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-04-30 03:00:06 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 239: NGC 5278 / NGC 5279
Lovely comma-shaped spiral with one long arm reaching out as if to hold smaller companion.
13h 41m 39.60s, +55° 40' 15.0" / 13h 41m 43.80s, +55° 40' 26.0" in Ursa Major
Visual Magnitude: 13.57/13.60, Size: 0.8x0.6/0.6x0.3 arcmin, Type: Sb/SBa, Distance: 370/370 Mly
This galaxy is receding from us at 7541.9/7595.3 km/sec

Arp 239
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 0.33 arcsec/pixel
2020-02-26 22:37:07 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 244: NGC 4038 / NGC 4039, the Antennae Galaxies
Two galaxies spiraling into one another. Many knots around nuclei and in the connecting arch and a diffuse dust cloud puffs out to the NE from 4039. A dark chasm lies in between the two galaxies. Very faint, very long extension of eastward "antenna" can be detected. The opposing western "antenna" is not visible in this image. 
12h 01m 53.0s  -18° 52' 06.0" / 12h 01m 53.6s  -18° 53' 11.0" in Corvus
Visual Magnitude: 10.14/10.30, Size: 5.4x3.8/5.4x2.7 arcmin, Type: SBm/SBm, Distance: 80/43 Mly
TThis galaxy is receding from us at 1634.0/1628.2 km/second (0.5% light speed).

Arp244

Image Details:
East is up, North is left (Up is 276° E of N)
39.2 x 29.1 arcmin; pixel scale 3.3 arcsec/pixel
2020-02-22 01:00:46 EST, Sharon GA
Mallincam DS287c, 10x10s exposures average-stacked, screenshot at 110 frames output

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Arp 248: "Wild's Triplet" PGC 36723 / PGC 36733 / PGC 36742
The two brighter galaxies have an obvious bridge between them, while the dainty third galaxy floats off by itself to the N.
PGC 36742 appears to be shaped like an integral sign. The bright, larger galaxies have multi-nucleated cores, especially evident in PGC 36733. The western-most, PGC36723 is highly distorted. All are spirals.

11h 46m 35.40s, -03° 51' 34.0" / 11h 46m 45.20s, -03° 50' 53.0" / 11h 46m 49.90s, -03° 49' 21.0" in Virgo
Visual Magnitude: 15.32/14.34/15.88, Size: 1.3x0.6/1.2x0.5/0.7x0.3 arcmin
Type: SABb/SBb/SBc, Distance: 240/250/250 Mly
These galaxies are receding from us at 5075.0/5175.6/5284.1 km/sec (1.7/1.7/1.8% light speed)

Arp 248
Image Details:
South is up, East is left (Up is 181° E of N)
20.8 x 20.8 arcmin; pixel scale 1.22 arcsec/pixel
2020-06-09 23:01:22 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 256: MCG-2-1-51 / MCG-2-1-52
A group that starts out with two galaxies and then seems to spread W to include, in Arp's words, a "small ragged galaxy" here labeled LEDA 978951. MCG-2-1-52 is a stretched-out spiral, with disturbed detached knots and patches to the S, and a widening spray to the upper arm tip towards the NE. MCG-2-1-51 has a bright condensed core. Closer inspection shows a significant backwash westward towards the LEDA galaxy. Other patches are noticed to the W of -52 and to the N of LEDA, possibly indicating more disruption in the area. 
00h 18m 50.90s, -10° 22' 37.0" / 00h 18m 50.10s, -10° 21' 42.0" in Cetus
Visual Magnitude: 14.37/14.35, Size: 0.9x0.5/1.1x0.4 arcmin, Type: Sb/SBc, Distance: 390/380 Mly
These galaxies are receding from us at 8270.6/8070.0 km/sec (2.7% light speed)

Arp 256
Image Details:
North is up, East is left (Up is 0.379° E of N)
16.3 x 16.3 arcmin; pixel scale 0.953 arcsec/pixel
2020-07-23 02:25:54 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Galaxies with Irregular Clumps, Arp 257-268

Arp 258: UGC 2140 group (Hickson 18)
UGC 2140 is a non-stop train wreck that stretches NW-SE. The elongated northern portion is full of knots and hazy remnants of the three original galaxies (PGC 10044,43,42/Hickson 18 B,C,D).The large bright spiral galaxy on the SE end (PGC 10046/Hickson 18A) looks like it is a sweeping extension of this group, but it is actually much more distant at 480Mly with more than twice the redshift than the northern galaxies and may not be physically associated with them.
02h 39m 05.50s, +18° 23' 20.0" in Aries
Visual Magnitude: 15.44, Size: 1.7x0.9 arcmin, Type: IB, Distance: 190 Mly
This galaxy group is receding from us at 4074.5 km/sec (1.4% light speed)

Arp 256
Image Details:
North is up, East is left (Up is 0.371° E of N)
14.6 x 14.6 arcmin, cropped; pixel scale 0.855 arcsec/pixel
2020-08-16 00:57:06 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Galaxies with Connected Arms, Arp 269-274

Arp 269: NGC 4490 (the Cocoon Galaxy) / NGC 4485
These two spiral galaxies both suffered extreme distortion when they passed one another. Both show chaotic structure with knots, warping, and detected segments. Stellar debris is seen at the separating ends of each.
12h 30m 36.30s, +41° 38' 38.0" / 12h 30m 31.2s, +41° 42' 03.0" in Canes Venatici 
Visual Magnitude: 9.33/12.04, Size: 0.9x0.8/2.0x1.3 arcmin, Type: I/I, Distance: 30/29 Mly
This galaxy is receding from us at 586.9/482.7 km/sec

Arp 269
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-28 02:40:36 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8



Arp 270: NGC 3395 / NGC 3396
A right-angle collision of two bright galaxies. Beautiful arcing arms claw westward out of 3395.The N arm of 3395 can be seen curving around to connect with the W end of 3396. Note the very elongated, almost rectangular, core of 3396. Both galaxies are disturbed and knotty.
10h 49m 50.10s, +32° 58' 58.0" / 10h 49m 55.10s, +32° 59' 27.0" in Leo Minor 
Visual Magnitude: 12.01/12.55, Size: 1.6x0.9/3.1x1.3 arcmin, Type: Sc/Sm, Distance: 84/86 Mly
These galaxies are receding from us at 1619.9/1694.2 km/sec (0.5/0.6% light speed)

Arp 270
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-27 04:20:52 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 272: NGC 6050
This object is a merger of two, possibly three, galaxies into a interconnected, smushed-together grouping. A zoomed-in view gives a hint of some spiral structure in one of the lobes. One elongated bright core and two knotty condensations (dim cores?) are visible.
16h 05m 23.50s, +17° 45' 26.0" in Hercules
Visual Magnitude: 14.69, Size: 0.9x0.6 arcmin, Type: SBc, Distance: 490 Mly
This galaxy is receding from us at 9419.0 km/sec (3.1% light speed).

Arp 272
Image Details:
South is up, East is left (Up is 181° E of N)
23.6 x 23.6 arcmin, cropped; pixel scale 1.38 arcsec/pixel
2020-06-11 01:59:18 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Arp 273: UGC 1810 & UGC 1813
The beautiful arms of UGC 1810 sweep dramatically to the South, with what used to be the Northern arm bent 180° around and now parallel to the Southern arm. The dark lane in between the arms makes a striking void, almost like someone used an eraser there. (Is this really a void?  Is it absorption? Could it be dark matter?) Smaller barred spiral UGC 1813 appears to be getting swept into the action.
02h 21m 28.70s, +39° 22' 33.0" / 02h 21m 32.60s, +39° 21' 25.0" in Andromeda
Visual Magnitude: 13.6/15.22,
Size: 1.7x0.6/1.4x0.3 arcmin, Type: SABb/Sba, Distance: 360Mly/360Mly
Thes galaxies are receding from us at 7560.0/7454.0 km/sec (2.5/2.5% light speed)

Arp 274
Image Details:
North is up, East is left (Up is 0.356° E of N)
14.3 x 14.3 arcmin; pixel scale 0.84 arcsec/pixel
2020-08-13 23:55:49 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Arp 274: NGC 5679 A/B/C
The tiny "C" galaxy is seen pulling apart the eastern arm of the much larger "B" galaxy. In turn, the "B" & "A" galaxies have interlocking northern arms joining them togther. Spiral structure easily seen in 5679A.
14h 35m 06.30s, +05° 21' 24.0" / 14h 35m 08.80s, +05° 21' 32.0" / 14h 35m 11.00s, +05° 21' 16.0" in Virgo 
Visual Magnitude (VizieR): 14.0/14.5/16.0,
Size: 0.8x0.5/1.1x0.6/0.3x0.2 arcmin, Type: Sc/Sb/C, Distance: 360Mly/420Mly/350Mly
Thes galaxies are receding from us at 7493.4/8660.5/7590.2 km/sec (2.5/2.9/2.5% light speed)

Arp 274
Image Details:
South is up, East is left (Up is 180° E of N)
15.7 x 15.7 arcmin; pixel scale 0.922 arcsec/pixel
2020-05-19 02:12:55 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Interacting GSalaxies, Arp 275-280


Arp 278: NGC 7253A / NGC 7253B
Another great collision - one galaxy is seen here broadsiding the other. Much detail is evident in both galaxies, with knots, dark absorption lanes, and glowing compressed areas. A large diffuse tail extends out at at angle to the W out of 7253A.
22h 19m 27.70s, +29° 23' 45.0" / 22h 19m 30.30s, +29° 23' 16.0" in Pegasus
Visual Magnitude: 13.99/13.94, Size: 1.6x0.4/1.3x0.4 arcmin, Type: SABc/Sc, Distance: 230/220 Mly
These galaxies are receding from us at 4584.5/4494.9 km/sec (1.5/1.5% light speed)

Arp 278
Image Details:
South is up, East is left (Up is 180° E of N)
16.4 x 16.4 arcmin, cropped; pixel scale 0.959 arcsec/pixel
2020-06-20 02:48:48 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure,bin2 SPA-2: 700mm reflector

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Arp 279: NGC 1253 / NGC 1253A
These two interacting galaxies are reaching out with wispy extensions coming from each one towards the other. Lots of knots and grainy bits in both, especially noticeable in the bright outer arms. A pretty pair! NGC 1253A is noticeably asymmetric and look a bit like the side view of small dog turning its head to look at us (or maybe at the big galaxy following close on is tail).
03h 14m 09.30s, -02° 49' 20.0" / 03h 14m 28.30s, -02° 48' 01.0" in Eridanus
Visual Magnitude: 11.60/13.84, Size: 4.6x1.9/1.0x0.7 arcmin, Type: SABc/SBm, Distance: 70/81 Mly
These galaxies are receding from us at 1709.4/1827.2 km/sec (0.6/0.6% light speed)

Arp 279
Image Details:
North is up, East is left (Up is 0.485° E of N)
17 x 17 arcmin, cropped; pixel scale 0.995 arcsec/pixel
2020-08-18 02:31:34 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure,bin2 SPA-2: 700mm reflector

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Arp 280: NGC 3769 / NGC 3769A
A David & Goliath collision. A small, somewhat rectangular, mottled galaxy is being drawn into one that's 3-4 times its size. Large NGC 3769 has a very bright elongated core; a noticable dark lane seems to pass under the core from the SE and continues along its W edge, extending northward. A bright knot is visible on the W side of the core. A much fainter knot can be seen in the diffuse haze that extends N from 3769. A shorter hazy tail extends S on the opposite end.
11h 37m 44.10s, +47° 53' 35.0" / 11h 37m 50.30s, +47° 52' 54.0" in Ursa Major
Visual Magnitude: 12.52/14.75, Size: 2.8x0.9/0.9x0.4 arcmin, Type: Sb/SBm, Distance: 53/49 Mly
These galaxies are receding from us at 719.9/788.7 km/sec (0.2/0.3% light speed)

Arp 280
Image Details:
South is up, East is left (Up is 180° E of N)
17.9 x 17.9 arcmin, cropped; pixel scale 1.05 arcsec/pixel
2020-05-20 00:58:22 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Galaxies with Infall and Attraction, Arp 281-286


Arp 281: NGC 4631
12h 42m 07.90s, +32° 32' 31.0" in Canes Venatici
Visual Magnitude: 8.89, Size: 14.4 x 2.2 arcmin, Type: SBcd, Distance: 24 Mly
This galaxy is receding from us at 615.9 km/sec

Arp 281
Image Details:
South is up, East is left (Up is 180° E of N)
16.7 x 16.7 arcmin, cropped; pixel scale 0.979 arcsec/pixel
2020-05-01 02:46:12 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Galaxies with Appearance of Wind Effects, Arp 287-293


Arp 293: NGC 6286 / NGC 6285
Two very pretty little galaxies, one with a S-shaped swirl and the other with a billowing swoosh off the side! The core of NGC 6286 appears to have a diagonal slit or thin absorption lane crossing N-S, just off-center. Perhaps this is evidence of massive forces crushing &/or folding the spiral during a collision or close pass of the two galaxies?
16h 58m 31.40s, +58° 56' 10.0" / 16h 58m 24.00s, +58° 57' 21.0" in Draco
Visual Magnitude: 14.13/14.50, Size: 1.2x1.1/1.1x0.6 arcmin, Type: Sb/S0-a, Distance: 280/280 Mly
These galaxies are receding from us at 5539.1/5498.8 km/sec (1.8% light speed)

Arp 293
Image Details:
North is up, East is left (Up is 0.0914° E of N)
16.2 x 16.2 arcmin, cropped; pixel scale 0.952 arcsec/pixel
2020-07-24 22:59:04 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2  SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Galaxies with Long Filaments, Arp 294-297

Arp 295: MCG-1-60-21 / MCG-1-60-22
 Note the long filamentous bridge between the two galaxies. An absorption structure and knots are visible in -21. Many companion galaxies are visible.
-21 is a LINER-Type AGN; -22 is an emission-line galaxy.

223h 41m 47.3s, -03° 40' 02.0"   23h 42m 00.8s, -03° 36' 55.0" in Aquarius
Visual Magnitude: 13.55/14.60, Size: 1.9x0.5 / 1.1x0.6 arcmin, Type: Sc/Sb, Distance: 310/330 Mly
These galaxies are receding from us at 6649.8/6964.6 km/sec (2.2/2.3% light speed)

Arp 295
Image Details:
North is up, East is left (Up is 359° E of N)
24.5 x 24.5 arcmin, cropped; pixel scale 1.24 arcsec/pixel
2020-07-17 07:33:57 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Arp 296: IC 694 (with NGC 3690, see Arp 299)
11h 28m 27.3s, 58° 34' 42.0" in Ursa Major 
Visual Magnitude: unknown, Size:?, Type: E, Distance: 160 Mly
This galaxy is receding from us at 3111.0 km/sec


Arp 297: NGC 5754 + NGC 5752 and NGC 5755 + NGC 5753
There are two pairs of galaxies here. The first pair is the true pair for Arp 297. NGC 5754+5752 are moving through space together, having the same redshift (~z=0.015) .
The other two, NGC 5755 and NGC 5753, are no longer considered part of Arp 297 (due to what is now considered to be a typo in Arp's catalog, where he listed 5755 instead of 5722). This pair is also an interacting duo but at a different distance and redshift (z=0.032).
NGC 5754 + NGC 5752:
Wide spirals encircle NGC 5754 and sweep up NGC 5752 in the outermost arm to the W.

14h 45m 19.70s, 38° 43' 52.0" / 14h 45m 14.10s, 38° 43' 44.0" in Bootes
Visual Magnitude: 13.98 /15.12, Size: 1.3x1.1/0.8x0.2 arcmin, Type: SBb/SBcd, Distance: 220/230 Mly
These galaxies are receding from us at 4404.3/4538.9 km/sec (1.5% light speed)
NGC 5755 + NGC 5753:
North of the first pair, NGC 5755 has a thick knotty flap that emerges from the NW tip of its core and sharply hooks to the S. This galaxy itself appears to be a merger of two galaxies. Also detectable is a diffuse wide northern arm making a huge sweep clockwise above the brighter portion in the general direction of smaller NGC 5753.
14h 45m 24.60s, 38° 46' 47.0" / 14h 45m 14.10s, 38° 43' 44.0" in Bootes
Visual Magnitude: 14.89/15.96, Size: 0.5x0.3/0.5x0.4 arcmin, Type: SBcd/Sab, Distance: 480/440 Mly
These galaxies are receding from us at 9776/9625 km/sec (3.3% light speed)

Arp 305
Image Details:
North is up, East is left (Up is 0.181° E of N)
15.7 x 15.7 arcmin; pixel scale 0.921 arcsec/pixel
2020-07-23 23:37:03 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, bin2 SPA-2: 700mm reflector @ f/8

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Double and Multiple Galaxies: Unclassified Double Galaxies, Arp 298-310

Arp 299: NGC 3690 (with IC 694)
Knotty and chaotic, obviously formed from two galaxies. There is an extremely bright elongated core, tapered and pointy at the tips. Most easily seen is the somewhat heart-shaped cloud; a thinner diffuse cloud extends much farther out.
11h 28m 33.6s, 58° 33' 46.0" in Ursa Major
Visual Magnitude: 11.68, Size: 2.4 x 1.9, Type: Sm, Distance: 160 Mly
This galaxy is receding from us at 3129.7 km/sec

Note: Arp 296 should actually be PGC 35345 (mag 15.8) + PGC 2580146 (mag 18.11), both labeled below.
Per C. Seligman, "With PGC 2580146, PGC 35345 is used in the Arp Atlas as an example of a double or multiple galaxy with long filaments, which is correctly described in the Atlas as a "Long st. filament almost to attachment with arm of spiral", but is misidentified by the Atlas as NGC 3690 and IC 694, which are actually (more or less) Arp 299."

Arp 299
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-27 04:31:52 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8


Arp 305: NGC 4017 / NGC 4016
NGC 4017 is a nice, bright S-shaped galaxy with a bright core and a prominent bright knot. Smaller 4016 has a droopy cloud surrounding a squashed (E-W) core - this galaxy looks quite beat-up!
11h 58m 45.70s, 27° 27' 09.0" / 11h 58m 29.00s, 27° 31' 44.0" in Coma Berenices
Visual Magnitude: 13.03/13.81, Size: 1.6x1.1/0.8x0.5 arcmin, Type: Sb/Sd, Distance: 160/170 Mly
This galaxy is receding from us at 3450.1/3440.3 km/sec

Arp 305
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-28 02:30:42 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8

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Arp 308: NGC 545 /NGC 547
with Arp 133 (NGC 41) + more than a dozen other galaxies
A very pretty field of view! NGC
545 & 547 form an easy-to-spot close pair of "cat's eyes". A large cloud surrounds both; the halo of 547 appears to reach out a good distance towards 541.
01h 25m 59.1s, -01° 20' 25.0" 01h 26m 00.6s, -01° 20' 43.0" in Cetus
Visual Magnitude: 12.34/12.12, Size: 3.0x1.9/3.1x1.9 arcmin, Type: E-S0/E, Distance: 250/260 Mly
This galaxy is receding from us at 5338.8/5526.9 km/sec (1.8/1.8% light speed)

Arp 133 and Arp 308
Image Details:
South is up, East is left (Up is 181° E of N)
31.6 x 31.6 arcmin; pixel scale 1.85 arcsec/pixel
2020-06-20 09:53:23 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure, bin2

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Double and Multiple Galaxies: groups of galaxies, Arp 311-321

Arp 313: NGC 3995 / NGC 3994 / NGC 3991
NGC 3995 is quite distorted with a string of interior knots; looks somewhat like a feathered fishing lure. NGC 3991 is lumpy and looks like a skinny tadpole with a bright, flattened nucleus. NGC 3994 is oval and bright, presenting not much detail.
11h 57m 44.1s, 32° 17' 39.0" / 11h 57m 36.90, 32° 16' 40.0" / 11h 57m 30.5s, 32° 20' 03.0" in Ursa Major
Visual Magnitude: 12.26/12.65/13.50, Size: 2.6x0.9/0.8x0.5/1.2x0.3 arcmin, Type: SABm/Sc/I, Distance: all 160 Mly
This galaxy is receding from us at 3317.2/3087.0/3189.2 km/sec

Arp 313
Image Details:
South is up, East is left (Up is 180° E of N)
22.5 x 22.5 arcmin; pixel scale 1.32 arcsec/pixel
2020-02-27 04:43:09 UTC, Almeria, Spain
FLI PL16803, 1x60s exposure, SPA-2: 700mm reflector @ f/8


Arp 316: NGC 3193
10h 18m 24.90s  +21° 53' 38.0" in Leo
Visual Magnitude: 11.03, Size: 2.4 x 2.2 arcmin, Type: E, Distance: 110 Mly
TThis galaxy is receding from us at 1370.5 km/second (0.5% light speed).

Arp 319 / NGC 3193
Image Details:
East is up, North is left (Up is 279° E of N)
39.6 x 29.7 arcmin; pixel scale 3.3 arcsec/pixel
2020-02-22 00:24:19 EST, Sharon GA
Mallincam DS287c, 10x10s exposures average-stacked, screenshot at 100 frames output
102mm refractor @ f/3.5, no filter


Arp 317 (partial group, image1; this pair = Arp 16): Messier 65 / Messier 66
11h 18m 55.90s  +13° 05' 35.0" / 11h 20m 15.00s +12° 59' 30.0" in Leo
Visual Magnitude: 9.16/8.91, Size: 7.6x2.0/10.3/4.6 arcmin, Type: Sa/Sb, Distance: 37 Mly
This galaxy is receding from us at 801.5/720.6 km/second (0.3/0.2% light speed).

M65-M66
Image Details:
South is up, East is left (Up is 195° E of N)
39.2 x 29.4 arcmin; pixel scale 3.26 arcsec/pixel
2020-02-14 23:25:17 EST, Sharon GA
Mallincam DS287c, 5x12s exposures average-stacked, screenshot at 110 frames output
102mm refractor @ f/3.5, no filter

 

Arp 317 (partial group, image2): NGC 3628
11h 20m 17.00s  +13° 35' 22.0" in Leo
Visual Magnitude: 9.13, Size: 11 x 3.4 arcmin, Type: SBb, Distance: 35 Mly b, Distance: 35 Mly
This galaxy is receding from us at 845.9 km/second (0.3% light speed).
Note: there are at least 7 other extremely dim IC galaxies in the field (too dim to label).

Arp 317 / NGC 3628
Image Details:
South is up, East is left (Up is     195° E of N)
39.1 x 29.3 arcmin; pixel scale 3.26 arcsec/pixel
2020-02-14 23:25:17 EST, Sharon GA
Mallincam DS287c, 5x12s exposures average-stacked, screenshot at 110 frames output
102mm refractor @ f/3.5, no filter

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Arp 318: Hickson Compact Galaxy Group 16 / NGC 833 group
HCG 16 contains four galaxies arranged in an arc. Three are starburst galaxies (NGC 833, 835, 839), two are LINER galaxies (NGC 838, 839), and two are Seyfert 2 galaxies with active supermassive black holes (NGC 833, 835). Also shown in this image is an adjunct member of the group, emission-line galaxy NGC 848.
NGC 833 data:
02h 09m 20.90s, -10° 07' 59.0" in Cetus
Visual Magnitude: 13.71, Size: 1.6 x 0.7 arcmin, Type: SABa, Distance: 180 Mly
This galaxy is receding from us at 3855.4 km/second (1.3% light speed).

Arp 318
Image Details:
North is up, East is left (Up is 0.57° E of N)
21.9 x 21.9 arcmin, cropped; pixel scale 1.28 arcsec/pixel
2020-06-27 08:31:29 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 1x60s exposure

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Double and Multiple Galaxies: Chains of Galaxies, Arp 322-332

Arp 323: NGC 7783 chain (Hickson 98)
A nice sweeping chain of three galaxies punctuated by two mag 15 stars. A fourth faint member of the group (mag 17) floats faintly to the N (98D) It is actually a background object and not physically connected to this group. A dust bridge from bright spiral 98A connects to round but similarly bright 98B to the South. Much smaller group member 98C lies farther South. A very faint APMUKS galaxy (mag 18.8!) can be seen just off the bottom of the chain to the SW.

Arp 323
Image Details:
North is up, East is left (Up is 0.354° E of N)
16.1 x 16.1 arcmin, cropped; pixel scale 0.943 arcsec/pixel
2020-07-25 02:58:43 UTC, Almeria, Spain
FLI PL16803, 1x60s bin2,  SPA-2: 700mm reflector @ f/8


Arp 326: UGC 8610 (+ others in the chain)
13h 37m 19.70s, +06° 29' 8.0" in Virgo
Visual Magnitude: 15.31, Size: 0.9 x 0.3 arcmin, Type: SABa, Distance: 550 Mly
This galaxy is receding from us at 11397.3 km/second (3.8% light speed).

Arp 326
Image Details:
South is up, East is left (Up is 180° E of N)
19 x 19 arcmin, cropped; pixel scale 1.11 arcsec/pixel
2020-06-11 23:01:58 UTC, El Sauce Observatory, Rio Hurtado Valley, Chile -70.8189° E -30.4922° N
CHI-1: CDK24 @ f/6.5 FLI PL9000, 2x60s exposure

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Miscellaneous galaxies, Arp 333-338

Arp 337:  Messier 82, the Cigar Galaxy
09h 57m 29.64s, 69° 35' 29.64" in Ursa Major
Visual Magnitude: 8.02, Size: 11 x 5.1 arcmin, Type: S?, Distance: 12 Mly
This galaxy is receding from us at 231.3 km/sec

M82
Image Details:
East is up, North is left (Up is 258° E of N)
39.6 x 29.7 arcmin; pixel scale 3.3 arcsec/pixel
2020-02-07 22:18:10 EST, Sharon GA
Mallincam DS287c, 10x10s exposures average-stacked, screenshot at 80 frames output
102mm refractor @ f/3.5, Orion SkyGlow filter, 97% full moon

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