Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
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Crescent Nebula n6888 BiColor with OIII emphasis, John D
Crescent Nebula n6888 BiColor with OIII emphasis
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Crescent Nebula n6888 BiColor with OIII emphasis

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Description

Toned down the Ha and Toned up the OIII to try to emphasize the outer OIII shell and show how it envelops the Ha.

Ha 18x1200, OIII 17x1200 both at 3nm

Bicolor:

Red=Ha

Green= Ha 17% + OIII 83%

Blue= OIII

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Crescent Nebula n6888 BiColor with OIII emphasis, John D

In these public groups

Cloudy Nights