NGC 6888 (Crescent Nebula) in Red

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oopfan
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NGC 6888 (Crescent Nebula) in Red

Post by oopfan » Mon Jun 18, 2018 3:42 pm

NGC 6888 (Crescent Nebula) - An Emission Nebula in Cygnus

This is the first of four components of an LRGB composite image.
Red filter
Total Integration Time: 91 minutes

Some star elongation which can be reduced with choice of a higher rejection ratio in DSS.
Used 50 dark frames instead of 30. This makes a significant difference in SNR in my opinion.

I'll give much more details when the final LRGB image is completed.

Brian
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NGC_6888_Processed_Red_122x45s_G100_BL20.jpg
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