BC Cygni

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BC Cygni

Postby cybermystic » Sat Dec 06, 2014 1:47 pm

I put this one up a while back as it showed P Cygni - one of the most luminous stars in the Milky Way.
I knew it also contained the bright Carbon star SAO 69636 near the crescent, and I saw another bright red star towards bottom left that I knew wasn't a Carbon star so I ignored it.
However, it obviously didn't ignore me so I just had a look on a planetarium program to see if it was anything special and of course it is.
It is BC Cygni a red supergiant star, class M3.51a, Mag B 13.19 and Mag V 9.55 - so VERY red as you can see.
One of the largest known stars with a radius of 1140 - 1230 solar radii.
So a very special star indeed grin01 grin01 grin01

ImageP Cygni annotated by cybermystic, on Flickr

Greg
Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/
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