11/30/2019 NGC 7331 and Stephan’s Quintet

30 November 2019

This is an image that I had always wanted to do, but was never really certain if it would be possible with our imaging setup. Here we can see spiral galaxy NGC 7331 in one corner, and Stephan’s quintet in the other. (Note that Stephan’s quintet is a “visual group” of galaxies – they’re not actually close together in space.)

NGC 7331 and Stephan’s Quintet
Capture dates: August 27, 2019 – September 4, 2019
LRGB image using Astrodon Luminance, Red, Green and Blue filters.
Hutech IDAS light pollution filter was also used
10 minute subs for each L, R, G, B filter
At least 20 subs were used per filter
Imaging scope: Astro-Tech AT10RC Ritchey Chr├ętien at f/6.7 (native f/8)
Focal reducer: Astro Physics CCDT67 focal reducer
Imaging camera: QSI 583wsg monochrome
Guide camera: Starlight Xpress Lodestar
Mount: Astro-Physics 900 GTO
Capture in Sequence Generator Pro
Calibration and stacking in AstroPixel Processor
Final process in Photoshop