The deep image shows extended nebulosity around M57. It was just visible in the red filtered
images, residing just above the noise level. This faint nebulosity was enhanced by log stretching in
MaxIm DL and then placed underneath the main color image as a black & white layer.
You may need to reduce the room lights to see the full extent of the nebulosity.
Astro-Physics 10" Mak-Cass with 0.67x CCD Telecompressor @ f 9.7
Red and Green 5 x 10 minutes
Blue 8 x 10 minutes
Luminance 5x 10 minutes
SBIG ST-10XE With CFW8
Image may not be used or reproduced without written permission from Roland Christen, Astro-Physics. Copyright 2003