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Sharpless 308


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#1 dcrowson

dcrowson

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Posted 09 November 2017 - 04:55 PM

Sharpless 308 (RCW 11) is a faint nebula ionized by Wolf-Rayet (https://en.wikipedia...Wolf–Rayet_star) star WR 6 (EZ CMa and others) at the center of the image. The nebula appears to be located approximately 4,500 light-years away in Canis Major. I suspect that this object would have a fairly bright OIII component but at nearly -24 declination, it would be rough to collect the data needed from the northern hemisphere.

 

Luminance – 12x600s – 120 minutes – binned 1x1

RGB – 8x300s – 40 minutes each – binned 2x2

 

240 minutes total exposure – 4 hours

 

Imaged October 20th and 21st, 2017 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

 

LRGB - https://www.flickr.c...3628606/sizes/l

 

Sh2-308%20-%20LRGB.jpg

 

Dan