Click to view larger
Comet magnitude & location: Mag 16.0 comet in Leo
Date: 2019-04-08 08:31:25 UTC
Location: Sonoita, Arizona USA (31:39:56 N, 110:36:06.4 W)
Conditions: Remote telescope via Sierra Stars Observatory Network
Scope: Planewave 20" CDK @ f/6.8
Camera: Andor IKON-L 936
Exposure details: One 60-second exposure. Luminance filter.
Image details from astrometry.net:
Center (RA, hms): 11h 20m 34.745s
Center (Dec, dms): -03° 14' 21.962"
Size: 27.6 x 27.6 arcmin
Pixel scale: 0.81 arcsec/pixel
Orientation: Up is 184° E of N
Note beautiful spiral galaxy PGC 34689, mag 13.66 @ 370 MLy, at bottom right.
Fits file available here.
Click to view larger
Comet magnitude & location: Mag 16.2 comet in Carina
Date: 2019-04-09 12:55:58 and 13:03:27 UTC
Location: Coonabarabran, NSW, Australia (331:16:30.6 S, 149:11:40.3 E)
Conditions: Remote telescope via Sierra Stars Observatory Network
Scope: Planewave 20" CDK @ f/6.8
Camera: SBIG STL6303E
Exposure details: Two 60-second exposures. No filter.
Image details from astrometry.net:
Center (RA, hms): 07h 52m 41.157s
Center (Dec, dms): -57° 55' 01.698"
Size: 27.5 x 18.1 arcmin
Pixel scale: 1.09 arcsec/pixel
Orientation: Up is 349° E of N
Click for BLINK of two 60" exposures, ~7.5 minutes apart.
Click to view larger
Comet magnitude & location: Mag 13.8 comet in Perseus
Date: 2019-09-30 09:38:41 UTC
Location: Sonoita, Arizona USA (31:39:56 N, 110:36:06.4 W)
Conditions: Remote telescope via Sierra Stars Observatory Network
Scope: Planewave 20" CDK @ f/6.8
Camera: Andor IKON-L 936
Exposure details: One 60-second exposure. Luminance filter.
Image details from astrometry.net:
Center (RA, hms): 02h 50m 03.440s
Center (Dec, dms): +38° 50' 35.699"
Size: 27.6 x 27.6 arcmin
Pixel scale: 0.81 arcsec/pixel
Orientation: Up is 186° E of N
Click to view larger
Comet magnitude & location: Mag 12.8 comet in Triangulum
Date: 2019-09-30 08:43:37 UTC
Location: Sonoita, Arizona USA (31:39:56 N, 110:36:06.4 W)
Conditions: Remote telescope via Sierra Stars Observatory Network
Scope: Planewave 20" CDK @ f/6.8
Camera: Andor IKON-L 936
Exposure details: One 60-second exposure. Luminance filter.
Image details from astrometry.net:
Center (RA, hms): 01h 54m 56.382s
Center (Dec, dms): +32° 00' 23.779"
Size: 27.6 x 27.6 arcmin
Pixel scale: 2.56 arcsec/pixel
Orientation: Up is 186° E of N
Mag 14.0 comet in Triangulum
initial stack after 5 minutes
Exposure details: Ten 30-second exposures were average-stacked live with dark frames over a period of 5 minutes (input/output 12 frames). No filter, unguided.
More details below.
Mag 14.0 comet in Triangulum
showing movement over 30 minutes
Exposure details: 30-second exposures were average-stacked live with dark frames over a period of 30 minutes (input/output 56 frames). No filter, unguided.
More details below.
Click to view larger
Click to view larger
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 2/10, T 8/10, clear, 34°F, SQM 21.48
Scope: Celestron 8" SCT @ f/10, unguided
Camera: Mallincam DS10cTEC
Image details from astrometry.net:
Center (RA, hms): 02h 14m 27.343s
Center (Dec, dms): +37° 21' 35.383"
Size: 27 x 20.2 arcmin
Pixel scale: 0.875 arcsec/pixel
Orientation: Up is 257° E of N
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 2/10, T 8/10, clear, 34°F, SQM 21.48
Scope: Celestron 8" SCT @ f/10, unguided
Camera: Mallincam DS10cTEC
Image details from astrometry.net:
Center (RA, hms): 02h 14m 27.343s
Center (Dec, dms): +37° 21' 35.383"
Size: 27 x 20.2 arcmin
Pixel scale: 0.875 arcsec/pixel
Orientation: Up is 257° E of N
Click to view larger
Comet magnitude & location: Mag 10.1 comet in Auriga
Date: 2019-12-02 ending at 04:19:15 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 2/10, T 8/10, clear, 34°F, SQM 21.48
Scope: Celestron 8" SCT @ f/10, unguided
Camera: Mallincam DS10cTEC
Exposure details: Ten 20-second exposures were average-stacked live with dark frames over a period of 15 minutes (input/output ~30 frames). No filter, unguided.
Image details from astrometry.net:
Center (RA, hms): 04h 51m 13.393s
Center (Dec, dms): +47° 09' 49.533"
Size: 27 x 20.2 arcmin
Pixel scale: 0.875 arcsec/pixel
Orientation: Up is 77.5° E of N
Click to view larger
Comet magnitude & location: Mag 14 comet in Grus
Date: 2019-12-03 12:34:36 UTC
Location: Coonabarabran, NSW, Australia (331:16:30.6 S, 149:11:40.3 E)
Conditions: Remote telescope via Sierra Stars Observatory Network
Scope: Planewave 20" CDK @ f/6.8
Camera: SBIG STL6303E
Exposure details: One 60-second exposures. No filter.
Image details from astrometry.net:
Center (RA, hms): 21h 39m 11.344s
Center (Dec, dms): -44° 32' 00.418"
Size: 27.8 x 18.5 arcmin
Pixel scale: 1.09 arcsec/pixel
Orientation: Up is 349° E of N
Click to view larger
Comet magnitude & location: Mag 8 comet in Ursa Major
Date: 2020-03-26 03:06 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 6/10 T 7/10 50°F, dewy
Scope: Alt-Az Celestron 8" SCT @ f/5
Camera: Mallincam Ds10cTeC
Exposure details: Twenty 15-second exposures live-stacked.
Image details from astrometry.net:
Center (RA, hms): 08h 38m 28.428s
Center (Dec, dms): 68° 23' 25.845"
Size: 48.1 x 36.1 arcmin
Pixel scale: 2.82 arcsec/pixel
Orientation: Up is 209° E of N
Click to view wide field
Comet magnitude & location: Mag 2 comet in Auriga
Date: 2020-07-12 09:38 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 6/10 T 5/10 62°F, very dewy
Lens: Canon 24mm STM EF-S @ f/2.8
Camera: Canon T3i on a fixed tripod
Exposure details: One 2-second exposure at ISO 400, heavily cropped from wide field of ~30° x 20°. (Click photo to see wide field.) No filter.
Comet location details from SkySafari app:
RA (hms): 07h 01m 30.54s
Dec (dms): 43° 47' 38.98"
Orientation: Looking NE @ Az 42.1°, Alt 08° 24' 23.2
Click to view larger
Comet magnitude & location: Mag 14.9 comet in Bootes
Date: 2020-08-22 22:09 UTC
Location: Almeria, Spain (37.7756° N, -3.1033° E)
Conditions: Remote telescope via Telescope Live
Telescope: Officina Stellare ProRC 700 (28") @ f/8
Camera: FLI PL16803
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 14h 44m 2.463s
Dec (dms) center: 21° 40' 1.167"
Orientation: North is up, East is left (Up is 0.298° East of North)
Pixel scale: 0.872 arcsec/pixel
Image size: 14.9 x 14.9 arcmin
Click to view larger
Comet magnitude & location: Mag 15.9? (seems dimmer) comet in Orion
Date: 2020-08-25 04:05:14 UTC
Location: Almeria, Spain (37.7756° N, -3.1033° E)
Conditions: Remote telescope via Telescope Live
Telescope: Officina Stellare ProRC 700 (28") @ f/8
Camera: FLI PL16803
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 06h 05m 1.441s
Dec (dms) center: 12° 04' 33.029"
Orientation: North is up, East is left (Up is 0.451° East of North)
Pixel scale: 0.918 arcsec/pixel
Image size: 15.7 x 15.7 arcmin
Blink of field "With" & "Without" comet.
Extremely faint smudge (seems much dimmer than mag 15.9) but located at the expected coordinates for this exact time. See location and mag data ephemeris from JPL HORIZONS. Click thumbnail to view.
Click to view larger
Comet magnitude & location: Mag 9.9 comet in Libra
Date: 2020-09-08 01:13:55 UTC
Location: Rio Hurtado, Coquimbo Region, Chile (30.4725° S, 70.7631° W)
Conditions: Remote telescope via Telescope Live
Telescope: Planewave CDK24 @ f/6.5
Camera: FLI Proline PL9000
Exposure details: One 60-second exposure, bin1, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 15h 25m 52.527s
Dec (dms) center: -21° 45' 47.634"
Orientation: North is up, East is left (Up is 359° East of North)
Pixel scale: 1.34 arcsec/pixel
Image size: 22.8 x 22.8 arcmin
Click to view larger
Comet magnitude & location: Mag 14.4 (v:>15) comet in Scorpius
Date: 2020-09-08 01:04:28 UTC
Location: Rio Hurtado, Coquimbo Region, Chile (30.4725° S, 70.7631° W)
Conditions: Remote telescope via Telescope Live
Telescope: Planewave CDK24 @ f/6.5
Camera: FLI Proline PL9000
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 16h 33m 08.936s
Dec (dms) center: -31° 47' 06.330"
Orientation: North is up, East is left (Up is 359° East of North)
Pixel scale: 1.21 arcsec/pixel
Image size: 20.7 x 20.7 arcmin
Regretting that I missed perihelion on this one. Beautiful star field.
Click to view larger
Comet magnitude & location: Mag 11.1 comet in Pisces
Date: 2020-12-15 17:59:13 UTC
Location: Almeria, Spain (37.7756° N, -3.1033° E)
Conditions: Remote telescope via Telescope Live
Telescope: Officina Stellare ProRC 700 (28") @ f/8
Camera: FLI PL16803
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 00h 32m 00.689s
Dec (dms) center: +18° 06' 10.734"
Orientation: North is up, East is left (Up is 359° East of North)
Pixel scale: 0.687 arcsec/pixel
Image size: 23.5 x 23.5 arcmin
Click to view larger
Comet magnitude & location: Mag 11.5 comet in Auriga
Date: 2020-12-18 18:51:21 UTC
Location: Almeria, Spain (37.7756° N, -3.1033° E)
Conditions: Remote telescope via Telescope Live
Telescope: Officina Stellare ProRC 700 (28") @ f/8
Camera: FLI PL16803
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 05h 16m 29.768s
Dec (dms) center: +40° 06' 05.318"
Orientation: North is up, East is left (Up is 359° East of North)
Pixel scale: 1.16 arcsec/pixel
Image size: 19.8 x 19.8 arcmin
Click to view larger
Comet magnitude & location: Mag 12.5 comet in Orion
Date: 2021-01-02 19:01:34 UTC
Location: Almeria, Spain (37.7756° N, -3.1033° E)
Conditions: Remote telescope via Telescope Live
Telescope: Officina Stellare ProRC 700 (28") @ f/8
Camera: FLI PL16803
Exposure details: One 60-second exposure, bin2, cropped. Luminance.
Image details from astrometry.net:
RA (hms) center: 04h 48m 07.675s
Dec (dms) center: +00° 54' 30.080"
Orientation: North is up, East is left (Up is 4.27° East of North)
Pixel scale: 1.3 arcsec/pixel
Image size: 22.2 x 22.2 arcmin
Click to view larger
Comet magnitude & location: 17.4 T-mag comet in Taurus, showing movement over 8 minutes.
Date: 2021-02-08 ending at 03:30:00 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 3/10, T 8/10, clear, 34°F, SQM 21.02
Scope: Celestron 8" SCT @ f/10, unguided
Camera: Mallincam DS10cTEC
Exposure details: 16x30-second exposures were average-stacked live with dark frames over a period of 8 minutes, unguided. Serious HDR stretch in Photoshop
Image details from astrometry.net:
Center (RA, hms): 03h 26m 40.276s
Center (Dec, dms): -01° 15' 06.048"
Size: 20.1 x 15.3 arcmin
Pixel scale: 1.86 arcsec/pixel
Orientation: Up is 343° E of N
Ephemeris from JPL Horizons showing comet location at this time:
Date (UT) HR:MN ____R.A.___ ____DEC____ T-mag
2021-Feb-08 03:30 03 27 15.03 -01 11 58.4 17.351
Click (above) to view larger
Ephemeris from JPL Horizons showing comet location at approximately this time:
Date (UT) HR:MN ____R.A.___ ____DEC____ T-mag
2021-Feb-08 03:50 06 50 49.86 +02 55 21.6 13.990
Comet magnitude & location: Mag 13 comet in Monoceros, showing movement over 7 minutes.
Date: 2021-02-08 Time: 03:42:16 - 03:49:30 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 3/10, T 8/10, clear, 34°F, SQM 21.02
Scope: Celestron 8" SCT @ f/10, unguided
Camera: Mallincam DS10cTEC
Exposure details:
25x15-second exposures were average-stacked live with dark frames to show movement over a period of 7 minutes, unguided, last frame @ 03:49:30 UTC.
Image details from astrometry.net:
Center (RA, hms): 06h 50m 2.679s
Center (Dec, dms): +02° 53' 52.519"
Size: 19.9 x 19.9 arcmin
Pixel scale: 1.84 arcsec/pixel
Orientation: Up is 343° E of N
Click thumbnail below to view animation of C/2021 A2,
taken ~2 hours later. 10x30-second frames were stacked and animated off-camera.
Brightest star to the right and up
from image center is HD 264901. Brightest star to the right and
down from image center is
HD 264804.
Click (above) to view larger
Comet magnitude & location: Mag 9 comet in Coma Berenices, showing position change after a 20 minute exposure gap.
Date: 2021-05-08 Time stack1: 03:47:55 - 03:55:20 UTC
Time stack2: 04:15:29 - 04:24:05 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 7/10, T 8/10, clear, 48°F, SQM 20.99
Scope: 61mm WO Z61 @ f/5.9, unguided
Camera: Mallincam DS10cTEC
Exposure details:
40x20-second exposures were stacked. There was a gap of 20 minutes between the 1st set of 20 images and the second.
Image details from astrometry.net:
Center (RA, hms): 12h 29m 01.422s
Center (Dec, dms): +30° 40' 56.934"
Size: 2.73 x 2.05 degrees
Pixel scale: 2.65 arcsec/pixel
Orientation: Up is 12.2° E of N
Click (above) to view larger
Comet magnitude & location: Mag 11 comet in Canes Venatici
Date: 2021-05-08 Time: 04:45:56 - 04:59:40 UTC
Location: Sharon, GA USA (33:33:14 N, 82:45:39.9 W)
Conditions: S 7/10, T 8/10, clear, 48°F, SQM 20.99
Scope: 61mm WO Z61 @ f/5.9, unguided
Camera: Mallincam DS10cTEC
Exposure details: 30x20-second exposures were stacked.
Image details from astrometry.net:
Center (RA, hms): 13h 41m 49.337s
Center (Dec, dms): +30° 54' 00.791"
Size: 2.73 x 2.05 degrees
Pixel scale: 2.65 arcsec/pixel
Orientation: Up is 12.2° E of N
Comet magnitude & location: Mag 10 comet in Gemini
Bright star to the East (left) of the comet is HD 54484
Date: 2021-10-30 Time: 02:20 UTC
Location: Canary Islands (28.29970 N, 16.50826 W)
Conditions: Level 4/5 (Good)
Scope: SLOOH's Canary 1 scope, Planewave CDK20
Camera: FLI PL09000
Exposure details: 3x60s Lum, 1x50s RGB, 3x3 binning.
Image details from astrometry.net:
Center (RA, hms): 07h 08m 56.501s
Center (Dec, dms): +26° 11' 20.675"
Size: 36.5 x 36.5 arcmins
Pixel scale: 2.15 arcsec/pixel
Orientation: Up is 359° E of N
Comet magnitude & location: Mag 8 comet in Corona Borealis
Bright star to the East (left) of the comet is HD 142534 (see astrometry)
Date: 2022-12-23 Time: 06:15:00 UTC
Location: Canary Islands (28.29970 N, 16.50826 W)
Conditions: Level 3/5 (Average)
Scope: SLOOH's Canary 1 scope, Planewave CDK20
Camera: FLI PL09000
Exposure details: 3x60s Lum, 3x3 binning.
Image details from astrometry.net:
Center (RA, hms): 15h 53m 46.944s
Center (Dec, dms): +28° 10' 34.054"
Size: 36.5 x 36.5 arcmins
Pixel scale: 2.15 arcsec/pixel
Orientation: Up is 359° E of N
Comet magnitude & location: Mag 9.3 comet in Virgo
Bright star to the lower right edge of the field is HD 102484 (see astrometry)
Date: 2024-06-07 Time: 21:15:19 UTC
Location: Canary Islands (28.29970 N, 16.50826 W)
Conditions: Level 3/5 (Average)
Scope: SLOOH's Canary 2 scope, Planewave CDK17
Camera: FLI PL16803
Exposure details: 3x50s Lum, 2x2 binning.
Image details from astrometry.net:
Center (RA, hms): 11h 49m 03.644s
Center (Dec, dms): +02° 54' 23.723"
Size: 43.4 x 42.4 arcmins
Pixel scale: 1.91 arcsec/pixel
Orientation: Up is 0.3° E of N