NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM (Rowland Archer)

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

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NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

Powered byPixInsight

NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

This data was acquired between October 17 and December 27 in my backyard observatory, running Starkeeper Voyager and my home-brew scheduler that directs Voyager to image objects when they are well positioned.

NGC 7331, aka the Deer Lick Galaxy, shows nice detail here with a reddish yellow bright core, swirling brown dust lanes and fluffy cloud-like spiral arms :-) . A fun target since the field is full of other little galaxies that are just big enough to show some interesting detail. I'll upload it separately, but the field was wide enough to capture Stephan's Quintet as well, way down in the lower left corner (not visible in this cropped image).

Calibrated, stacked, light gradients removed and HaRGB combined in AstroPixelProcessor, and the remaining processing done in PixInsight. In PI, for the color frames I used PCC and MLT Noise Reduction with a mask to smooth the background. No further NR was needed. Used a Masked Stretch, then processed the L frame with Decon, MLT NR, Histogram Transformation, and then LRGB combined the color and lum frames.

The resulting frame went through HDRMT and LHE with a galaxy mask made with the GAME script, including the smaller galaxies. Some curves and saturation added, and finally a touch of Morphological Transformation to knock down the stars a bit. That's all folks!

ZWO ASI1600MM/QHY163M
Suburban Astrophotography
Imaged with Voyager

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Galaxies

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Status	Advanced success
Started	...
Astrometry.net job	4120016
PixInsight job	U816KHDT4EU34ZT1TNZQ8S409FTG80JB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h37m18s.518
RA (top/left)	22h37m48s.124
RA (top/right)	22h37m53s.142
RA (bottom/right)	22h36m48s.868
RA (bottom/left)	22h36m43s.960

Dec (center)	+34°27′37″.19
Dec (top/left)	+34°16′48″.90
Dec (top/right)	+34°37′44″.45
Dec (bottom/right)	+34°38′24″.12
Dec (bottom/left)	+34°17′28″.71

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NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

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NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

NGC 7331 and Friends - HaLRGB - 30+ Hours - ONTC 8" Newtonian - ASI1600MM

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