Messier 81 RGB 72 x 300s gain 101, -25C Total exposure time 6 hours Image Credit: Thomas Röell – Instagram: pilot_astro Edited in AstroPixel Processor, Photoshop and Lightroom. Sky-watcher HEQ5, Meade 8” ACF SCT Lumicon off-axis guider with ZWO ASI120MM guidecamera ZWO ASIAIR ZWO ASI533MC Pro