M104 - Sombrero Galaxy

Note: for an improved version see here.

Location: Roi Et, Thailand (104 79 E, 15 31 N)

Date: 5 and 6 March 2011

Camera: QHY-9 and QHY filters

Telescope: William Optics FLT110

Frames: Fifteen 10 minute L frames and six 5 minutes exposures in each of RGB binned at 2x2.

Processing: Stacked in CCDStack, L and RGB combined, curves, levels, selective unsharpened and noise reduction in Photoshop CS5.