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M109 galaxy in Ursa Major

This galaxy lies very very close to one of the bright stars of the bowl.

An integration on several nights with 60-second subs at gain 0. This resulted in a lot of (read-?) noise. I should experiment further with Gain 100.

M109 Ursa Major Esprit 120mm F7 no flattener ASI2600MC 360x60s Gain 0 Offset 50 no flats ; darks, bias
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Finally an acceptable M63

Imaging over two nights in April, 314 frames were colelcted, 101 frames 120″ and 212 frames 60″ at Gain 100.

This gain value did not raise up to expectations, I could see more noise in the end result easily. Compared to what I’m used to at Gain 0 with this camera.

M63 Canes Vanatici, Esprit120mm F7 & ASI ZWO 2600mc @ Gain 100, 6 hours and 55 minutes integration in 1 and 2-minute frames.