NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame (Alan Brunelle)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7315 · NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · NGC 7331 · NGC 7333 · NGC 7335 · NGC 7336 · NGC 7337 · NGC 7338 · NGC 7340 · NGC 7342 · NGC 7343 · NGC 7345 · PGC 141035 · PGC 141039 · PGC 141041 · PGC 2035684 · PGC 2039348 · PGC 2040409 · PGC 2045849 · PGC 2047594 · PGC 2049200 · PGC 2051985 · PGC 2052363 · PGC 2057466 · PGC 2057487 · PGC 2059949 · PGC 214856 · And 28 more.

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NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

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NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

Given only two days of decent weather in the last couple of months, I thought that I would go after some non-emmision/dark targets such as galaxies. Weather prospects here in western Oregon are not great.

This is a widefield view of this area that includes NGC 7331, Stephan's Quintet, another tight galaxy grouping and a host of other easily defined galaxies and then more small ones that you have to really search for. Because this is a fairly wide field, my goal was to get what can only be rather smallish objects, yet get the best definition in detail as possible at this F.L. Higher power, high resolution shots will await the day I get an appropriate telescope for such imaging.

I miscalculated the sky trajectory during the night, which cut in half my expected number of subs to 36. (Darn trees!) But I am happy with the result, and I am not sure given the FOV that there is much more to be gained by more subs. Early in the processing, I did see a bit of IFN stretching from the lower left toward the big galaxy and Stephan's, but it was faint and not really the subject of interest in this shot.

Here I have taken Gary Imm's lead in presenting North as right. I agree with him that this looks best. And being that we live in the northern hemisphere, we are right. Right?

I am struggling with the PI platesolving, so when I get this image plate solved I will add that to this post as well.

Original
D
Final
E

D

Description: This is the annotated plate-solved image that I promised. It includes the PGC catalog. Not sure what catalog captures the rest...

Uploaded: ...

E

Description: Oriented correction to make North be to the right as suggested in my notes.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	3941333
PixInsight job	QTO6IK7HZTYCJY07TMFM4FOWM69VU423
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h36m53s.41
RA (top/left)	22h38m14s.95
RA (top/right)	22h42m08s.28
RA (bottom/right)	22h35m29s.33
RA (bottom/left)	22h31m44s.32

Dec (center)	+34°37′11″.7
Dec (top/left)	+33°20′19″.6
Dec (top/right)	+35°22′19″.1
Dec (bottom/right)	+35°54′01″.1
Dec (bottom/left)	+33°51′13″.9

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NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

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NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

NGC 7331, Stephan's Quintet. Three tight galaxy groupings along with lots of little fuzzies in a widefield frame

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