PhotographerCraig & Tammy Temple
Location of photoHendersonville, TN, USA
Date/Time of photoOctober 7, 8 & 9, 2013
EquipmentTelescope: Stellarvue Raptor SVR105 @ f/7
Accessories: Stellarvue SFF7-21 flattener; Dew control by Dew Buster; Alnitak Flat-Man
Mount: Takahashi EM-200 Temma2
Camera: QSI583wsg CCD @ -10.0C
Guiding: Starlight Xpress Lodestar via PHD
Filters: Astrodon Tru-balance E-Series Generation II LRGB
Exposure: 25 x 10min.(L) binned 1x1; 10 x 10min. each (R, G, & B) binned 2x2
Acquisition: ImagesPlus Camera Control v4.3
Processing: PixInsight 1.8
Post-processing: PixInsight 1.8; Adobe Photoshop CS5
DescriptionNGC 7331 is the large spiral galaxy to the lower left in this image. This galaxy is the largest member of the group of galaxies know as the Deer Lick Group. It has an apparent magnitude of 10.4 and lies in the constellation Pegasus at a distance of about 40 megalight-years away. This galaxy was discovered by William Herschel in 1784.
The small galaxy group to the upper right is known as Stephan’s Quintet. It was discovered by Edouard Stephan in 1877 at Marseilles Observatory. The group consists of five galaxies which form the first compact galaxy group ever discovered.