Telescope: Skywatcher 8" f/5 Newtonian
Focus: Prime focus
Camera: SAC7B, uncooled
Exposure: 60 x 25s
Date: 27th May 2003
Processing: The usual YRGB
processing, except that the subtraction of a 'banding flat' (see the
Advanced Processing page) was done to
remove fine banding noise.
The night had poor transparency, so the
quality of the image is something of a surprise. The new technique to
remove the fine banding worked well here and enabled the image to be
stretched more and unsharped to show finer detail. Note the two stars
within the ring and one embedded top right within the nebula.
Luminance layering was done to bring out
star colours and these show up better than in previous images.