Cave Nebula, Dean Salman
Taken with Epsilon 160 F/3.3 astrograph using SBIG ST-10 XME CCD Camera; total exposure of 5 hours 40 minutes using standard red, green, and blue filters. Hydrogen-Alpha filter used to preserve blue reflection nebula; CCD Commander automation imaging to capture image over 3-night period. http://www.ccdimages.com, http://sharplesscatalog.com, http://thenightsky.mobi