Open cluster NGC 6866

Posted by dcrowson
on Sunday, July 09, 2017

NGC 6866 (Melotte 229 and others) is an open cluster located approximately 4,700 light-years away in Cygnus.

I saw a hint of red in the background so I decided to collect some Ha exposures while the moon was big. The top left is cataloged as LBN 310. The rest of the nebula doesn’t appear to be cataloged.

Luminance – 15x600s – 150 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

270 minutes total exposure – 4 hours 30 minutes


Ha – 19x1800s – 570 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

690 minutes total exposure – 11 hours 30 minutes


Imaged from Dardenne Prairie, Missouri (a red zone) on June 25th and July 1st and 6th, 2017 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

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