A new processing of M109

My previous processing of M109 – 360x60s – did not turn out well. Serious issues with noise, most likely calibration files that were not ok.

So I did a complete re-build of the calibration files darks and bias.

The resulting stack and processed image is noticeably better:

M109, 360x60s Gain 0 Esprit120 F7 ASI2600MC Darks, Bias

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.

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