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NGC 7331 and Stephan's Quintet in Pegasus



Scope: FSQ-106N 106 mm refractor  at f/5, Location: Laguna Mountains, CA  20 July 2012  Camera: Artemis285

Exposure: 12 x 6 min  (1x1 bin) exposure with UV/IR block, 7 x 3 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (as FITs).  Calibrated, stacked (Sigma Combine), LRGB channel registration, equalization, central gradient removal - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. This image is a straightforward LRGB combine with Luminance layering.     Final Image size is approximately 1800 x 1351.

North is to the right in this image. NGC 7331 is the main object in the upper right in this image. In the lower left there is a group of galaxies known as Stephan's Quintet consisting of NGC 7317, 7318, 7318B, 7319, 7320.  NGC 7331 is about 50 million light years distant from Earth; the interacting members of Stephan's quintet are about 200 million light years distant from Earth.    This image replaces an earlier image in the Archives here.  Horizontal FOV is 55'

Image center is approximately - Equatorial 2000: RA: 22h 36m 29s Dec: +3415'38" 


All images and content remain the property of Jim Thommes - copyright 2003 - 2012

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