NGC 6720 (M57) Lyr 2.5

September 18, 2006

This is a combination of 14 images each of 15 seconds The images were taken with a DSI Pro II attached to an RCX 12" F/8 telescope. Each of the images was corrected with a dark frame and a flat field.

No Guiding or PEC

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Last updated: September 20, 2006