The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus (Dan Bartlett)

Celestial hemisphere: Southern · Constellation: Grus (Gru) · Contains: Solar system body or event

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The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

Powered byPixInsight

The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

Another difficult imaging session with comet C/2023 H2 Lemmon below 15 degrees in altitude. Aside for the following evening (very poor data) this probably the last of imaging of this comet for over 3800 years.

Observational details:
Backyard setup
scope: C14HyperStar D = 356mm; fl =729mm;
exposure: 25 x 90 sec
Seeing: 3/5
Transparency:6/10
Observer: DEBartlett
Place: June Lake_California USA

image info (all):
Projection ............... Gnomonic
Projection origin ........ [946.273947 938.937679] px -> [RA: 22 28 11.335 Dec: -38 52 55.79]
Resolution ............... 2.131 arcsec/px
Rotation ................. -3.244 deg
Reference system ......... ICRS
Observation start time ... 2023-12-05 01:43:32 UTC
Observation end time ..... 2023-12-05 02:26:46 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 727.59 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 7' 12.4" x 1d 6' 40.4"
Image center ............. RA: 22 28 11.334 Dec: -38 52 55.79 ex: +0.000040 px ey: -0.000033 px
Image bounds:
top-left .............. RA: 22 30 51.075 Dec: -38 17 26.76 ex: -1.347758 px ey: -1.112716 px
top-right ............. RA: 22 31 12.464 Dec: -39 24 33.14 ex: +0.137559 px ey: -1.554409 px
bottom-left ........... RA: 22 25 12.678 Dec: -38 21 05.27 ex: -1.098769 px ey: +0.237508 px
bottom-right .......... RA: 22 25 28.706 Dec: -39 28 16.82 ex: +0.111545 px ey: +0.237231 px

Original
Final
B

Comets Imaging

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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Status	Advanced success
Started	...
Astrometry.net job	9080364
PixInsight job	09KRIL199TR2JX5THZU6AN8ZJN6I6974
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h28m11s.54
RA (top/left)	22h30m51s.80
RA (top/right)	22h31m12s.71
RA (bottom/right)	22h25m28s.61
RA (bottom/left)	22h25m12s.61

Dec (center)	-38°52′56″.1
Dec (top/left)	-38°17′26″.1
Dec (top/right)	-39°24′33″.6
Dec (bottom/right)	-39°28′16″.8
Dec (bottom/left)	-38°21′02″.6

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The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

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The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

The Last (image) of Comet C/2023 H2 Lemmon as it Travels Southward into the Constellation of Grus

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