Stephan’s Quintet or Hickson 92 is a visual grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group, visible in the constellation Pegasus, was discovered by Édouard Stephan in 1877 at the Marseille Observatory.
The group is the most studied of all the compact galaxy groups. The brightest member of the visual grouping (and the only non-member of the true group) is NGC 7320.
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.
Stephan’s Quintet is about 280 million light years away from Earth.
I captured this image early Sunday morning June 06, 2021, during my initial test run with this setup, no comma corrector yet, just camera to scope and it is only a 15 minute exposure total integration time. (15 x 1 minute exposure subs) before the clouds rolled in.
Captured with my 12inch TPO F4 Imaging Newt., on a Bisque ME Mount (Pro track dithering), no Auto-guiding needed, & my old ZWO 174M cooled mono cmos camera.