Crop from M81 M82 image Luminance: 900 x 4, 600 x 6, 300 x 3
Various lengths to attempt IFN and preserve core of M81, RGB 3 x 150 secs binned (each), Ha 3 x 900secs
Skywatcher 130PDS & Atik460EX, HEQ5
April 2018 - Bortle 4POW Astronomy Shed 5th October 2014