M17 Swan Nebula with NG Telescope
27/06/2010 (09:37) by Petri KehusmaaLatest image from Australia is M17 alias Swan Nebula. This is a narrowband image taken with Ha, OIII and SII filters. Exopsures are Ha:OIII:SII=120:20:40. Ha was also used as luminance layer in Photoshop.
