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