Hemisphere:  Northern  ·  Contains:  NGC 7327  ·  NGC 7331  ·  NGC 7335  ·  NGC 7336  ·  NGC 7337  ·  NGC 7340  ·  NGC7331  ·  NGC7333  ·  NGC7335  ·  NGC7336  ·  NGC7337  ·  NGC7338  ·  NGC7340
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NGC 7331 and the Deer Lick Group, 



    
        

            Paul Ricker
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NGC 7331 and the Deer Lick Group

Imaging telescopes or lenses: Astro-Tech AT8RC

Imaging cameras: ZWO ASI183MM-Pro

Mounts: iOptron iEQ45 Pro

Guiding cameras: QHYCCD QHY5-III 178M

Focal reducers: Astro Physics CCDT67

Software: PhD2  ·  StarTools  ·  Deep Sky Stacker (DSS)  ·  Photoshop CC  ·  Astro Photography Tool - APT Astro Photography Tool

Filters: ZWO new B  ·  ZWO new G  ·  ZWO new R  ·  ZWO new L

Accessory: ZWO EAF  ·  ZWO EFW Mini  ·  Teleskop Service TSFLIP Flip Mirror and Off Axis Guiding System


Dates:Oct. 12, 2020Oct. 13, 2020

Frames:
ZWO new B: 6x300" (gain: 100.00) -5C bin 2x2
ZWO new G: 6x300" (gain: 100.00) -5C bin 2x2
ZWO new L: 31x300" (gain: 100.00) -5C bin 2x2
ZWO new L: 34x60" (gain: 100.00) -5C bin 2x2
ZWO new R: 6x300" (gain: 100.00) -5C bin 2x2

Integration: 4.6 hours

Darks: ~48

Flats: ~12

Avg. Moon age: 25.19 days

Avg. Moon phase: 20.05%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 3947469

RA center: 22h 37' 7"

DEC center: +34° 24' 41"

Pixel scale: 0.937 arcsec/pixel

Orientation: 89.458 degrees

Field radius: 0.287 degrees


Resolution: 1817x1258

Locations: Champaign-Urbana Astronomical Society dark site, Champaign, IL, United States

Data source: Traveller

Description

The Deer Lick Group contains galaxies NGC 7331 (the large foreground galaxy) and NGC 7335, 7336, 7337, and 7340 (the "fleas"). Despite their positions on the sky, these galaxies do not appear to be members of a gravitationally bound structure, since they lie at distances between ~ 12 and ~ 112 Mpc.

Comments

Author

ElectricLungfish
Paul Ricker
License: None (All rights reserved)
330
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Revisions

  • NGC 7331 and the Deer Lick Group, 



    
        

            Paul Ricker
    Original
  • Final
    NGC 7331 and the Deer Lick Group, 



    
        

            Paul Ricker
    B

B

Description: Another 99 minutes of L, reprocessed with 2x2 binning and some reduction in star size. Also a tighter crop.

Sky plot

Sky plot

Histogram

NGC 7331 and the Deer Lick Group, 



    
        

            Paul Ricker