NGC 6720 (M057) 85.6" X 61.6"


Image is a combination of 10 images, each of 15 seconds. This used 4x4 binning. Each of the images was corrected with a dark frame and a flat field. The images taken with a AltaU-32 attached to an OGS 20” F/8.1 telescope.

An STI was atttached to a Televue 85 for guiding.

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Last updated: April 28, 2015