This is the Trifid Nebula in Sagittarius. The telescope is the AT8RC with field reducer (AP-CCDT67) autoguided with an OAG. It's about 3 hours of integration time with a modified Canon T1i DSLR: Baader filter and thermo-regulated sensor using an home made cooling system. Processed with PixInsight. http://www.cooledpix.com