C/2017 K2 PanSTARRS and M10, 2022-07-17 (jewzaam)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: Solar system body or event

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C/2017 K2 PanSTARRS and M10, 2022-07-17

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C/2017 K2 PanSTARRS and M10, 2022-07-17

Glad to get this comet on a rare clear night before it would be blocked by a nearby roof. Only my second go at a comet, I'm very happy with how it turned out. I decided to get short subs without any delays and shoot with OSC in the hopes that I'd get _something_ useful. More time of course would be better, but I'll take what I can get!

Processing comets is frustrating! The key steps for this result was to get was to get a starless version of each comet aligned sub. To get rid of residual stars MMT was used against extracted luminance. Then some careful removal of the comet in Affinity Photo was required. Unfortunately in two rounds! The first round was to create a mask that focused only on removing the comet core. The second round removed a few trails that were in the comet tail. Each of these are used in turn to remove the trails with curves, lowering with K and L in almost equal amounts very carefully.

Original
Final
B

B

Description: Brightened the comet and didn't reduce stars. Carefully added stars back around the comet so things were not saturated.

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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.

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Status	Advanced success
Started	...
Astrometry.net job	6037946
PixInsight job	ADZ9K3S13CCKYDAJODTWJGJAX1GQMYHI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h53m34s.95
RA (top/left)	17h00m09s.70
RA (top/right)	17h00m19s.48
RA (bottom/right)	16h47m02s.43
RA (bottom/left)	16h46m47s.84

Dec (center)	-04°29′23″.5
Dec (top/left)	-06°10′24″.10
Dec (top/right)	-02°51′22″.2
Dec (bottom/right)	-02°48′10″.7
Dec (bottom/left)	-06°07′21″.1

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C/2017 K2 PanSTARRS and M10, 2022-07-17

C/2017 K2 PanSTARRS and M10, 2022-07-17

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C/2017 K2 PanSTARRS and M10, 2022-07-17

C/2017 K2 PanSTARRS and M10, 2022-07-17

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