The Needle Galaxy is located in the constellation Coma Berenices. The edge of this galaxy faces us which gives it its narrow profile. The Needle is 38.49 million light years away and was discovered in 1785 by astronomer William Herschel. The image consists of 200 five minute exposures for a total of about 17 hours.
L: 139x300" bin 1x1; R 1.25": 18x300" bin 2x2; G: 24x300" bin 2x2; B: 19x300" bin 2x2 Total Integration: 16.7 hours (Darks: ~15 Flats: ~15 Flat darks: ~15) Gain: 110; Sensor T: -20C
L: 139x300" bin 1x1; R 1.25": 18x300" bin 2x2; G: 24x300" bin 2x2; B: 19x300" bin 2x2 Total Integration: 16.7 hours (Darks: ~15 Flats: ~15 Flat darks: ~15) Gain: 110; Sensor T: -20C