The Deerlick Group
NGC7331 (largest galaxy in the field)
Deerlick Group (cluster of small galaxies right around 7331)
Scope: Planewave 12.5" CDK
Mount: Paramount ME (MKS5000)
Camera: Apogee U16M w Astrodon Gen II Filters
9 x 10 min Luminance
6/6/6 x 10 min RGB
Acquired using CCD-Commander and TheSkyX
Post processing in PixInsight: calibration, cosmetic correction, align
& stack, colour calibration, noise reduction, gradient removal.
Additional clean-up in PS CC 2018
Click on the image to see it at 50% of the original.
RA: 22h 37.1'
Visual Mag: 9.5
11 x 4 arcminutes
by William Herschel in 1784.
7331 is one of the brighter galaxies which is not included in Messier's
catalog. It exposes a fine spiral structure despite its small
inclination from the edge-on position. Several companions and
background galaxies are visible even in our photo. NGC
7331 was among the earliest recognized spiral galaxies, and listed
his list of 14 "spiral or curvilinear nebulae" discovered before 1850.
Oct 13/14 2018