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NGC 4236 Spiral Galaxy in Draco

Camera - QHY 163M 

Telescope - Astro Tech 10" RC @ f/6  FL = 1524 mm

Mount - MI-250

Off Axis Guided with Lodestar X2

Astro-Physics CCDT67 Reducer

HaLRGB,  Ha=18x300s, L=68x180s, R=26x180s, G=30x180s, B=27x180s,  Gain 75, Offset  50, -30C. All exposures taken with CCDAutopilot V5.  All exposures biinned 1X1.  Astronomik Deep Sky RGB filters, Astronomik CLS-CCD Luminance Filter, Astronomik 6nm Ha filter.   HaLRGB Sigma clip combined in Maxim DL v6,  Additional processing done in Photoshop CC and Pixinxight 1.8.

HaLRGB 90/204/78/90/81

Total 9.0 Hours

Date - HaLRGB -March 3,5,22, 2019,