Sharpless 187

[petevasey]

Sharpless 187 is an emission nebula situated 1.5 degrees North of the bright star Ruchbah in a star rich area of  Cassiopeia, enveloped in interesting dust clouds.  Although the emission area responds well in Hydrogen alpha light, nevertheless it is bright enough to show up nicely in ordinary RGB imaging. The data for this was collected over two nights, 5 luminance on 26th Octber before the clouds rolled in, the remaining luminance and all the RGB on 27th - a beautiful clear night all night.  QSI 8300wsg with TSFLAT2 and Starlight Xpress AO unit on Meade 127 refractor.  Luminance 17 x 20 minutes, RGB each 5 x 20 minutes, all unbinned.  North is up.  A larger image is available on my web site here.

Cheers

Peter

 

 

Edited October 29, 2019 by petevasey
Link added

[kirkster501]

Very good.  A new one on me is that.