4-19-22. M101. Cold with good transparency except for passing clouds from time to time. Poor seeing at FWHM 3.2-3.6. 2 hours total imaging time with 6200MC on Tak FSQ106N. Tracked, guided, dithered. Calibration and stacking in Sirl. Post-processing in Sirl and Gimp. 1 minute subs. I took this image to compare with one I took earlier in the month using the same scope with my Canon FS 60D DSLR. Bortle 5-6. Besides seeing the main issue was a stiff breeze at 11 mph with occasional higher gusts.
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