Sharpless 2-211 + 2-212

Posted by dcrowson
on Sunday, April 30, 2017

Sh2-211 (LBN 717) is the small nebula near the center of the image.

Sh2-212 is the larger nebula at the bottom left. Open cluster NGC 1624 is embedded in it. Sh2-211 appears to be part of the same cloud as Sh2-212.

The open cluster to the left (east) of Sh2-211 is Berkeley 67.

I originally planned on a HaRGB image but the Ha signal was very faint. I took another night to capture some luminance to see the difference.

LRGB Image:

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

270 minutes total exposure – 4 hours 30 minutes

HaRGB Image:

Ha – 12x1800s – 360 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

480 minutes total exposure – 8 hours

Imaged from Dardenne Prairie, Missouri (a red zone) on January 7th and February 15th and 17th, 2017 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

HaRGB - https://www.flickr.com/photos/dcrowson/34238685181/sizes/l

LRGB - https://www.flickr.com/photos/dcrowson/34328038666/sizes/l

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