NGC 7331 and Stephan's Quintet (Peter Hannah)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7317 · NGC 7318 · NGC 7319 · NGC 7320 · NGC 7331 · NGC 7335 · NGC 7337 · NGC 7340

NGC 7331 and Stephan's Quintet, Peter Hannah

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NGC 7331 and Stephan's Quintet

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NGC 7331 and Stephan's Quintet

This image shows the galaxy group known as Stephan’s Quintet along with the spiral galaxy NGC7331 and a number of other galaxies (there are more then 20 in the image).The largest galaxy in the image is NGC7331, a spiral some 40 million light years away. The four galaxies to its upper right, though referred to as part of the 7331 Group, are actually far in the background at a distance of over 300 million light years. They are sometimes referred to as ‘The Fleas’.Stephan’s Quintet was the first compact galaxy group discovered, by Edouard Stephan in 1877. While four of the galaxies are a real association lying at a distance of 210-340 million light years, NGC 7320 is a foreground object at a distance of around 40 million light years. Ironically as its distance matches that of NGC7331 it could well be a member of that group rather than Stephan’s.

The field of view is about 42 arc-minutes wide by 34 high.

Total exposure times were 8 hours Luminosity and 6 hours each through R, G & B filters. Processed in PixInsight.

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Status	Basic success
Started	...
Astrometry.net job	7846275
PixInsight job	n/a
PixInsight queue size	n/a
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NGC 7331 and Stephan's Quintet

NGC 7331 and Stephan's Quintet

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NGC 7331 and Stephan's Quintet

NGC 7331 and Stephan's Quintet

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