Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034  ·  NGC 3077
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M81 and M82 with new parameters, Charles Bradshaw
M81 and M82 with new parameters
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M81 and M82 with new parameters

Getting plate-solving status, please wait...
M81 and M82 with new parameters, Charles Bradshaw
M81 and M82 with new parameters
Powered byPixInsight

M81 and M82 with new parameters

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Description

I have taken the subs of M81 and M82 with new camera parameters.  Previously, gain was at 700 and offset 0 (the defaults).  However, these subs were captured with gain 200 and offset 50.  This leads to both bias and darks with mean about 500 DN.  Previously, a lot of bias pixels were zero and saturated.

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M81 and M82 with new parameters, Charles Bradshaw