Comet 21P/Giacobini-Zinner photobombs M35 (lowenthalm)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: Solar system body or event

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Comet 21P/Giacobini-Zinner photobombs M35

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Comet 21P/Giacobini-Zinner photobombs M35

Early Saturday morning, September 15th, 2018, around 3:30am while observing at Hancock Field Station in Oregon, I vaguely remembered reading somewhere earlier in the week that comet 21P/Giacobini-Zinner was going to come quite close to M35. I checked SkySafari, and as luck would have it, it was plotted as being right on top of M35 - I am not really sure it should be called an occultation, should it?

For the next 45 minutes, I hurriedly took exposure after exposure with various combinations of gain, exposure lengths and total live-stacking integration times in order to catch the scene without either blurring the core too much or blowing out the core. The comet was moving pretty fast in just a couple of minutes, so I couldn't live-stack for more than a minute or so. After culling out the bad and less pleasing images, I selected this one. I pulled up the saturation a bit to better highlight the intensely blue coma against the black sky. You can see the bright stars of M35 behind the comet, the edge of the cluster just slipping a bit out of the top of the field when I had the comet nicely framed.

Original
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B

B

Description: I reprocessed this image from last year to show better color in the stars and comet, and then forgot to upload the new version!

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Status	Advanced success
Started	...
Astrometry.net job	3659822
PixInsight job	0Y2J380Z3O8GPUDVINVUNJJDPSK1FQ68
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h09m24s.621
RA (top/left)	06h09m21s.180
RA (top/right)	06h08m04s.591
RA (bottom/right)	06h09m28s.104
RA (bottom/left)	06h10m44s.875

Dec (center)	+24°18′15″.56
Dec (top/left)	+24°38′25″.37
Dec (top/right)	+24°09′40″.38
Dec (bottom/right)	+23°58′07″.53
Dec (bottom/left)	+24°26′47″.95

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Comet 21P/Giacobini-Zinner photobombs M35

Comet 21P/Giacobini-Zinner photobombs M35

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Comet 21P/Giacobini-Zinner photobombs M35

Comet 21P/Giacobini-Zinner photobombs M35

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