WR 134 + 135

Posted by dcrowson
on Sunday, August 13, 2017

WR 134 (HD 191765, HIP 99377 and numerous others) at the center of the image and WR 135 (HD 192103, HIP 99525 and numerous others), a similar-looking star in the center of some nebulosity left of WR 134, are both variable Wolf-Rayet (https://en.wikipedia.org/wiki/Wolf%E2%80%93Rayet_star) stars located approximately 6,000 light-years away in Cygnus. According to Wikipedia, WR 134 is five times the size of our Sun but 400,000 times brighter. The slightly smaller WR 135 is three times the size and 190,000 times brighter.

The nebulosity in this region is cataloged as the Cygnus Molecular Cloud.

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 June 21st and 28th, and August 17th, 2013 with a SBIG ST-8300M on an Astro-Tech AT90DT at f/6.7 603mm.

HaRGB - https://www.flickr.com/photos/dcrowson/36413615871/sizes/l

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