NGC 3031 (M081) 21' X 10'

2015:05:08:01:15:12

This image is a combination of 3 layers. Layer 1 6 images each with an exposure of 300 seconds through a Red filter. Layer 2 6 images each with an exposure of 300 seconds through a Green filter. Layer 3 6 images each with an exposure of 300 seconds through a Blue filter. This used 2x2 binning. The images were taken with a SBIG STT-8300 3 CCD Camera attached to a Centurion 18” F/2.8 and was corrected with both a dark frame and a flat field.




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Last updated: December 3, 2015