M101 / NGC5457

Astrobin: https://www.astrobin.com/e0kz45/

In this workflow I used Ha narrowband as integration for Luminance and Red channel, and Oiii narrowband master as integration for Green and Blue channel as according to Kayron Mercieca, cfr.: https://www.lightvortexastronomy.com/tutorial-combining-lrgb-with-narrowband.html
Approved subframes detailed list (PixInSight weighted) resumed gathered by filter, all by Astronomic, recorded between 28/10/2021 and 25/04/2023. 
Ha: 226 x 180″ -20C: 141 gain 139, 85 gain 173
Oiii: 159 x 180″ -20C: 94 gain 139, 65 gain 173
L: 636 x 60″ -20C:  553 gain 139, 83 gain 173
G: 532 x 60″ -20C:  373 gain 139, 159 gain 173
B: 500 x 60″ -20C:  298 gain 139, 202 gain 173
R: 614 x 60″ -20C:  438 gain 139, 176 gain 173

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Art, Asiair Plus, AsiAir Pro, Astronomic B 1,25" filter, Astronomic G 1,25" filter, Astronomic Ha 1,25" filter, Astronomic Luminance 1,25" filter, Astronomic Oiii 1,25" filter, Astronomic R 1,25" filter, Astronomy, Astrophotography, Deep Sky, Deepsky, M101, M101 / NGC5457, Narrowband, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO ASI120mm Mini, ZWO ASI1600mm Pro, ZWO EFW 8x1,25"