NGC7331 – The Deer Lick Group

Magnitude 10.3 spiral galaxy NGC7331 dominates this group of galaxies. It is estimated to be about 50 million light years away, and is about 64,000 light years across. Close to NGC7331 are five other galaxies, plus a cluster of at least three can be seen in the lower-left corner. Look closely at the larger image, and you'll discover many more of the "faint fuzzies."

Exposure
 • 5 hours (30 x 10 minutes) @ -20°C
 • Dusk flats
 • Camera position angle: 0°
Processing  • With PixInsight:
   ☞ Calibrate, star-align, and integrate subframes
   ☞ Neutralize background, remove gradients
   ☞ Reduce background noise
   ☞ Shrink stars
 • Final tweaking in Photoshop CS6
Date and Location  • October 3, 2019
 • Louisa County, Virginia, USA
Equipment
 • TMB-130SS APO refractor @ f/7 on an A-P 1200 mount
 • ZWO ASI-1600MC Pro color camera
 • Guided with an ST-402 camera on a 60mm f/5 scope
 • Imaging and autoguiding with MaxIm DL 6.20
 • Automated image acquisition with ACP Observatory Control


Updated May 23, 2023