NGC 7023


The Iris Nebula (NGC 7023) is a reflection nebula found in the constellation Cepheus (King of Ethiopia). It is 1,300 light-years away and 6 light-years across.

The image above was taken with the STT-8300 camera at f/8.8 on a 10" RC and AP-900 mount. There is data from the Oregon Star Party August 2015 and August 2016.  It is an RGB composite (as detailed below) with a total exposure time of 188 min.  All processing was done with PixInsight.


Exposure Count Binning
Luminance (none)    
Red 62 min 31 x 2 min 2x2
Green 54 min 27 x 2 min 2x2
Blue 72 min 36 x 2 min 2x2