Galaxy NGC7331 and Stephan's Quintet (Stephen Heliczer FRAS)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · NGC 7327 · NGC 7331 · NGC 7333 · NGC 7335 · NGC 7336 · NGC 7337 · Stephan's Quintet

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Galaxy NGC7331 and Stephan's Quintet

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Galaxy NGC7331 and Stephan's Quintet

This picture possibly possibly the limits of my astrophotography equipment and ability from my back garden. Taken during nearly full moon (always the way on cloudless nights!) from my North London Bortle 7 garden with Edge HD 8 on an AVX, ASI2600 MC Pro, Optolong l-Pro broadband filter, guided with Lacerta. Stephan's Quintet is a gorgeous cluster of four interacting Hickson galaxies in Pegasus. They appear very small, and about 300 million light years away, and you need a large-ish scope on a steady guided mount. It's a good challenge but very tricky. Stephan's Quintet (NGC 7320, NGC 7319, NGC 7318 (a and b), NGC 7317) is a visual grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group is the most studied of all the compact galaxy groups. The brightest member of the visual grouping is NGC 7320, which has extensive H II regions where active star formation is occurring. Four of the five galaxies in Stephan's Quintet form a physical association, a true galaxy group, Hickson Compact Group 92, and will likely merge with each other.

NGC 7331, is much closer, an unbarred spiral galaxy about 40 million light-years away. NGC 7331 is the brightest galaxy in the field of a visual grouping known as the NGC 7331 Group of galaxies. The other members of the group are the lenticular or unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These galaxies lie far in the background at distances of approximately 332, 365, 348 and 294 million light years, respectively

Gear used:
Celestron HD8 telescope
AVX Mount
ZWO ASI2600MC pro camera
Optolong l-Pro
Lacerta Autoguide
Apps used:
Sharpcap
Astro Pixel Processor

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Status	Advanced success
Started	...
Astrometry.net job	5032706
PixInsight job	XB081YJS3NLH6W8H2RNE9OG2QR9X9FQ2
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h36m30s.305
RA (top/left)	22h35m40s.134
RA (top/right)	22h35m28s.143
RA (bottom/right)	22h37m20s.230
RA (bottom/left)	22h37m32s.717

Dec (center)	+34°12′51″.22
Dec (top/left)	+34°32′38″.88
Dec (top/right)	+33°54′33″.99
Dec (bottom/right)	+33°53′02″.14
Dec (bottom/left)	+34°31′05″.81

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Galaxy NGC7331 and Stephan's Quintet

Galaxy NGC7331 and Stephan's Quintet

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Galaxy NGC7331 and Stephan's Quintet

Galaxy NGC7331 and Stephan's Quintet

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