NGC 7331

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7327 · NGC 7331 · NGC 7333 · NGC 7335 · NGC 7336 · NGC 7337 · NGC 7338 · NGC 7340

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NGC 7331

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NGC 7331

What to expect when doing galaxy imagery with f 11,25? I wanted to give it a try last night. Conditions were not too bad at all. Unfortunatelly I was not able to use my ASI 2600 MM Pro for an LRGB approach since I had to ship it back to the vendor since some oily fluid was emerging across the sensor glas all of a sudden and the artefacts stemming from it could not be calibrated away.

So I used the 183 MCP and I thought with that f ratio 180 second subs should be ok. When looking at the stars it might have been a bit too abitious! So I did 81 subs, made flats, flat darks and darks and here is the result. Not quite happy with it but to be honest since I missed alomst the entire galaxy season this year (only managed to do NGC 4395) I add it to this year's galaxy collection :-)

Thanks for watching!

B

Description: Oily liquid floating across the sensor glas of the ASI 2600 MM Pro (which did such a great job until that event).

Uploaded: ...

C

Description: That's how the flat looked like after the "leakage".

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D

Description: Reprocess from scratch...somewhere I lost the color before :-)

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F

Description: darker background

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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	4890644
PixInsight job	9HURV29GE5K0WUJ5RXHIQEYBC0TAF016
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h37m03s.778
RA (top/left)	22h38m29s.918
RA (top/right)	22h36m34s.503
RA (bottom/right)	22h35m37s.644
RA (bottom/left)	22h37m32s.872

Dec (center)	+34°25′08″.37
Dec (top/left)	+34°25′44″.50
Dec (top/right)	+34°41′52″.70
Dec (bottom/right)	+34°24′28″.49
Dec (bottom/left)	+34°08′24″.58

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NGC 7331

NGC 7331

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NGC 7331

NGC 7331

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