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Contains:  NGC 898, NGC 891
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Galaxy NGC 891, Caldwell 23, 





    
        

            Steven Bellavia
Galaxy NGC 891, Caldwell 23

Galaxy NGC 891, Caldwell 23

Technical card

Resolution: 4372x2459

Dates:Oct. 30, 2018Nov. 3, 2018

Frames:
Baader Semi-APO 2": 32x180" (gain: 120.00) -15C bin 1x1
Baader Semi-APO 2": 14x60" (gain: 120.00) -15C bin 1x1
Baader Semi-APO 2": 23x90" (gain: 120.00) -15C bin 1x1

Integration: 2.4 hours

Avg. Moon age: 23.01 days

Avg. Moon phase: 41.83%

Bortle Dark-Sky Scale: 4.00

Temperature: 5.67

Astrometry.net job: 2349051

RA center: 2h 22' 32"

DEC center: +42° 21' 0"

Pixel scale: 0.691 arcsec/pixel

Orientation: 270.407 degrees

Field radius: 0.481

Data source: Backyard

Description

From Wikipedia:
NGC 891 (also known as Caldwell 23 and Silver Sliver Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.

Comments

Author

bellavia
Steven Bellavia
License: None (All rights reserved)
2450
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Revisions

  • Galaxy NGC 891, Caldwell 23, 





    
        

            Steven Bellavia
    Original
  • Galaxy NGC 891, Caldwell 23, 





    
        

            Steven Bellavia
    C
  • Final
    Galaxy NGC 891, Caldwell 23, 





    
        

            Steven Bellavia
    D

Sky plot

Sky plot

Histogram

Galaxy NGC 891, Caldwell 23, 





    
        

            Steven Bellavia