This LRGB shot was taken with an SBIG STL11000 and the 20 inch Alluna AK3 Astrograph of IAS-Observatory 1935mm/f3.85. RGB filters were used from Baader. L-channel images were acquired without any filter. Additive exposure time is 8 hours.
SBIG STL-11000,IAS AK3 Astrograph Alluna self guided
full exif