Celestial hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7331  ·  NGC 7335  ·  NGC 7336  ·  NGC 7337  ·  NGC 7340
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NGC7331 Group or the Deer Lick Group, 



    
        

            Tim
NGC7331 Group or the Deer Lick Group
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NGC7331 Group or the Deer Lick Group

Getting plate-solving status, please wait...
NGC7331 Group or the Deer Lick Group, 



    
        

            Tim
NGC7331 Group or the Deer Lick Group
Powered byPixInsight

NGC7331 Group or the Deer Lick Group

Acquisition details

Dates:
Aug. 23, 2022 ·  Aug. 27, 2022 ·  Aug. 28, 2022 ·  Sept. 24, 2022
Frames:
Baader Blue (B-CCD) 1.25": 75×115(2h 23′ 45″) (gain: 120.00) -15°C bin 2×2
Baader Green (G-CCD) 1.25": 79×115(2h 31′ 25″) (gain: 120.00) -15°C bin 2×2
Baader Red (R-CCD) 1.25": 80×115(2h 33′ 20″) (gain: 120.00) -15°C bin 2×2
Baader UV/IR Cut / Luminance 1.25": 405×60(6h 45′) (gain: 120.00) -15°C bin 2×2
Integration:
14h 13′ 30″
Darks:
20
Flats:
20
Flat darks:
20
Avg. Moon age:
13.84 days
Avg. Moon phase:
4.22%

Basic astrometry details

Astrometry.net job: 6339485

RA center: 22h37m17s.8

DEC center: +34°2414

Pixel scale: 0.299 arcsec/pixel

Orientation: 267.018 degrees

Field radius: 0.264 degrees

Resolution: 5516x3168

File size: 50.0 MB

Locations: Home Observatory - Nelsons Bay Observatory , South River, Ontario, Canada

Data source: Backyard

Description

NGC 7331, also known as Caldwell 30, is an unbarred spiral galaxy about 40 million light years  away in the constellation Pegasus.  NGC 7331 is the brightest galaxy in the field of a visual grouping known as the NGC 7331 group of galaxies or the Deer Lick Group. In fact, the other members of the group, NGC 7335, 7336, 7337 and 7340, lie far in the background at distances of approximately 300-350 million light years and are often called the fleas.

I processed the galaxies separately from the stars. This allowed me to really stretch and push the detail in the galaxies without affecting the stars. Processing the stars separately allowed me to reduce them. Finally the 2 images are merged together allowing the many fainter galaxies to be more easily seen.

Comments

Sky plot

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Histogram

NGC7331 Group or the Deer Lick Group, 



    
        

            Tim