M31 Andromeda Galaxy in RGB+Ha (Greg Harp)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31 Andromeda Galaxy in RGB+Ha

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M31 Andromeda Galaxy in RGB+Ha

This was tough for me to shoot from under Bortle 8 skies, and I'm not entirely thrilled with the result, but it's a vast improvement over the last M31 image I shot (which was back in 2003 under Bortle 2 skies).

This is a combination of RGB shot with the 294MC on my Raptor61 and H-alpha shot with the 2600MM on my SV80S at 0.8X. I shot RGB on the 2600MM/SV80S as well, but something in my optical system generated a halo I couldn't calibrate out with flats despite multiple attempts at re-shooting them, so I abandoned that data.

The 294MC generated some banding artifacts I haven't seen it do before, but this is the first time I've used it at 0C instead of -10C (due to the weather being so warm). I didn't go to a lot of trouble to correct them.

Cloudy Nights

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
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Star trails
Northern lights
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Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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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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.
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Status	Advanced success
Started	...
Astrometry.net job	5089944
PixInsight job	RD584TO1CFW125E39MYRVV4HJF3R0IN6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m44s.58
RA (top/left)	00h45m42s.32
RA (top/right)	00h48m58s.70
RA (bottom/right)	00h39m38s.37
RA (bottom/left)	00h36m44s.48

Dec (center)	+41°15′29″.6
Dec (top/left)	+39°39′52″.9
Dec (top/right)	+42°29′11″.1
Dec (bottom/right)	+42°50′45″.2
Dec (bottom/left)	+40°00′34″.5

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M31 Andromeda Galaxy in RGB+Ha

M31 Andromeda Galaxy in RGB+Ha

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Image Index:

Contribution Index (beta):

M31 Andromeda Galaxy in RGB+Ha

M31 Andromeda Galaxy in RGB+Ha

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Description

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