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Contains:  IC 3946, IC 3949, IC 3963, IC 4040, IC 4041, IC 4045, IC 4051, NGC 4850, NGC 4853, NGC 4860, NGC 4865, NGC 4867, NGC 4869, NGC 4872, NGC 4873, NGC 4874, NGC 4886, NGC 4889, NGC 4895, NGC 4907, NGC 4908, NGC 4911, NGC 4919, NGC 4921, NGC 4923
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Coma Cluster, 


            Riedl Rudolf
Coma Cluster
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Coma Cluster

Technical card

Dates:May 6, 2018

Frames: 31x302" ISO1600

Integration: 2.6 hours

Darks: ~25

Flats: ~25

Bias: ~25

Avg. Moon age: 20.73 days

Avg. Moon phase: 64.86%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 21.30

Temperature: 13.00 job: 3128631

RA center: 12h 59' 49"

DEC center: +27° 56' 24"

Pixel scale: 0.581 arcsec/pixel

Orientation: 12.034 degrees

Field radius: 0.503 degrees

Resolution: 5107x3578

Locations: Home, St. Peter/O., Steiermark, Austria

Data source: Backyard


I made the first test shots in May 2018 with the new Nikon D750 and did never process the picture. Now, as its always bad weather it was time to look for old data. Hope you enjoy!



Riedl Rudolf
License: None (All rights reserved)


  • Coma Cluster, 


            Riedl Rudolf
  • Final
    Coma Cluster, 


            Riedl Rudolf


Description: Bit more contrast and slighty more brightness

Sky plot

Sky plot


Coma Cluster, 


            Riedl Rudolf