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Contains:  NGC 4627, NGC 4631, NGC 4656, NGC 4657, NGC4627, NGC4631, NGC4656, NGC4657, PGC100706, PGC1968805, PGC1969714, PGC1970315, PGC1970316, PGC1971469, PGC1973273, PGC1977697, PGC1981071, PGC1983264, PGC1987386, PGC1988024, PGC2003430, PGC2832120, PGC3088893, PGC42413, PGC42593, PGC42736, PGC42772, Whale Galaxy
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NGC 4631 and NGC 4656, 



    
        

            Jenafan
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NGC 4631 and NGC 4656

Technical card


Dates:April 17, 2020

Frames:Astronomik UV/IR L2 Clipfilter: 61x300" ISO800

Integration: 5.1 hours

Darks: ~20

Flats: ~25

Bias: ~150

Avg. Moon age: 24.50 days

Avg. Moon phase: 25.98%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.29

Temperature: 13.00


Astrometry.net job: 3552277

RA center: 12h 42' 57"

DEC center: +32° 19' 11"

Pixel scale: 1.973 arcsec/pixel

Orientation: 2.318 degrees

Field radius: 0.773 degrees


Resolution: 2275x1658

Locations: 10km outside of my hometown, Jena, Thüringen, Germany

Data source: Traveller

Comments

Author

Jenafan
Jenafan
License: None (All rights reserved)
910
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Revisions

  • NGC 4631 and NGC 4656, 



    
        

            Jenafan
    Original
  • Final
    NGC 4631 and NGC 4656, 



    
        

            Jenafan
    B

B

Description: enhanced contrast

Sky plot

Sky plot

Histogram

NGC 4631 and NGC 4656, 



    
        

            Jenafan