Hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7331  ·  NGC 7335  ·  NGC 7336  ·  NGC 7337  ·  NGC 7340  ·  NGC7331  ·  NGC7333  ·  NGC7335  ·  NGC7336  ·  NGC7337  ·  NGC7338  ·  NGC7340
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The Deer Lick Galaxy Group, 


            Gabe Shaughnessy
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The Deer Lick Galaxy Group

Imaging telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Imaging cameras: Quantum Scientific Imaging QSI 690 WSG-8

Mounts: Astro-Physics AP1100GTO

Guiding telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: Televue Paracorr Type-2

Software: PixInsight  ·  Voyager  ·  Astro-Physics Command Center (APCC) Pro Software  ·  PHD2

Filters: Astrodon LRGB CCD Imaging Filters (E-Series), Gen2

Accessory: Pegasus Astro Ultimate Powerbox v2

Dates:Aug. 14, 2020Aug. 16, 2020Aug. 19, 2020

LRGB: 30x180" bin 2x2
Astrodon Luminance E-Series Gen 2: 98x300" bin 1x1

Integration: 9.7 hours

Avg. Moon age: 17.31 days

Avg. Moon phase: 10.86%

Astrometry.net job: 3789402

RA center: 22h 37' 11"

DEC center: +34° 25' 28"

Pixel scale: 0.658 arcsec/pixel

Orientation: 0.024 degrees

Field radius: 0.385 degrees

Resolution: 3298x2634

Data source: Backyard


NGC 7331 Group is a visual grouping of galaxies in the constellation Pegasus. Spiral galaxy NGC 7331 is the brightest member of the collection, which is also called the Deer Lick Group. It contains four other members, affectionately referred to as the "fleas”: the lenticular or unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These galaxies lie at distances of approximately 332, 365, 348 and 294 million light years, respectively. Although adjacent on the sky, this collection is not a galaxy group, as NGC 7331 itself is not gravitationally associated with the far more distant “fleas”; indeed, even they are separated by far more than the normal distances (~2 Mly) of a galaxy group.

Source: Wikipedia