M31 Andromeda Galaxy (Guillermo de Miranda)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: 32 And · 35 nu. And · Andromeda Galaxy · HD2993 · HD3396 · HD3431 · HD3447 · HD3741 · HD3765 · HD3827 · HD3969 · HD4143 · HD4174 · HD4267 · HD4322 · HD4479 · HD4501 · HD4669 · HD4902 · HD5285 · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224 · The star 32And · The star νAnd

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M31 Andromeda Galaxy

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M31 Andromeda Galaxy

First time trying galaxy photography. I got into this hobby to mainly photograph galaxies, and M31 is a good target practice. Definitely had to jump through some hoops to process unfiltered subs, as my Bortle 8 skies cause a massive gradient in mere seconds. Making use of the strengths of different post-processing applications is a must, jumping between Pixinsight, SiriL and Photoshop. I suppose Pixinsight can do it all, but I'm not that competent with it yet to use it as my only post processing tool.

Anyway, I'm glad how this image turned out. As it was hot outside, it was an uphill battle against sensor noise but despite all that it turned out better than I expected. Never thought the blue colors would pop out at 30 second exposures! I might try this target through my L-eNhance to get some Ha-data, although I'm not sure how effective that will be at this focal length as the Ha-regions will appear quite small. We'll see.

Processing details:
Stacking and photometric color calibration in Siril. Cropping, background extraction, SCNR and histogram transformation in Pixinsight. Further stretching, camera raw tweaking in Photoshop.

Aperture on the Samyang was dialed back to f/3.5.

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	Distinct awarded users	Total awarded images
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Deep sky
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	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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Status	Advanced success
Started	...
PixInsight job	Q2QY7K75NA789NJK26A2NL9S71OBBXG0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m49s.37
RA (top/left)	00h45m53s.71
RA (top/right)	00h57m11s.91
RA (bottom/right)	00h39m28s.10
RA (bottom/left)	00h28m58s.45

Dec (center)	+41°10′44″.6
Dec (top/left)	+38°19′10″.3
Dec (top/right)	+42°20′20″.1
Dec (bottom/right)	+44°02′02″.5
Dec (bottom/left)	+39°54′41″.5

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M31 Andromeda Galaxy

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