NGC7635 Bubble Nebula

NGC7635, a Ha picture, exposure time Ha=12*10min. Dark, flat frame subtraction done on each Ha-sub-frame. Astronomik Ha filter used (and additionally an IDAS LPS 2" filter also used; forgot to remove it). Taken with Meade LX200ACF 16", Optec NextGEN WideField 0.5X reducer and SBIG ST-8XME; 17. July-2009.

Picture published via/in Meade4M:

NGC7635 in Ha