NGC 4258 (M106) 19' X 8'

2013:05:02:02:21:41

This image is a combination of 4 layers. Layer 1 is Clear is a combination of 8 images, each of 300 seconds. Layer 2 is Red was an exposure of 300 seconds Layer 3 is Green is a combination of 2 images, each of 300 seconds. Layer 4 is Blue was an exposure of 300 seconds Each of the images was corrected with a dark frame and a flat field. The images taken with a SBIG STT-8300 3 CCD Camera attached to an Centurion 18” F/2.8 telescope.




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Last updated: February 22, 2015