NGC 6611 (M016) 7.0'

2014:09:18:00:26:43

This image is a combination of 3 layers. Layer 1 3 images each with an exposure of 300 seconds through a Hydrogen Alpha filter. Layer 2 3 images each with an exposure of 300 seconds through a Sulfur II filter. Layer 3 3 images each with an exposure of 300 seconds through a Oxygen III filter. 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: May 12, 2015