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M82 Cigar Galaxy, 


            Shannon Calvert

M82 Cigar Galaxy

Technical card

Resolution: 2400x1662

Dates:Feb. 8, 2018

Frames:Light Pollution Filter: 84x99" ISO1600

Integration: 2.3 hours

Darks: ~12

Bias: ~80

Avg. Moon age: 22.90 days

Avg. Moon phase: 42.07%

Bortle Dark-Sky Scale: 6.00 job: 1928029

Locations: The Westport Observatory (WAS), Westport, CT, United States

Data source: Unknown


A semi-successful test of several new parts on the 16" SCT. The resulting image is decent, but I think some color fringes might be a collimation issue, and I had a problem with the target drifting from frame to frame even with steady autoguiding. The guide scope was definitely not lined up with the main scope, so my guess is that the frame was rotating around the guide star well outside this field of view.



Shannon Calvert
License: None (All rights reserved)


M82 Cigar Galaxy, 


            Shannon Calvert