Monday, December 11, 2017

NGC 7331 (Deerlick Group) - Revisted


One of the first images I every photographed, back in 2013, was the galaxy NGC 7331.  It's known as the main attraction of the Deerlick Group.  Two things immediately grabbed my attention in this image.  First, is the almost uniform spatial distribution of stars.  Second is the incredible number of galaxies in this one view.  I found over twenty, and with a longer exposure, more would certainly be evident.  The galaxies gathered around NGC 7331, though appearing nearby, are estimated to be 10 times more distant than the main galaxy.  For comparison, check out my first attempt at this image below.  Needless to say, a lot of reading, practice and some better equipment adds up to better images.



Photo Details
December 10, 2017
Orion 8" Astrograph on VX Mount
SBIG STF-8300C Camera
Baader MPC Mark III Multi-Purpose Coma Corrector
Skyglow filter
46 subframes at 3 minutes/frame
Total Exposure Time = 2 hours 18 minutes
Image Acquisition in CCDOps
Image Stacking in Deep Sky Tracker
Image Processing in PhotoShop


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