| Object: | M101 - Pinwheel Galaxy (Ursa Major) |
| Date: | 06-08.06.2005 |
| Scope, mount, camera: | FFC, MM, ST-10XME |
| Filter, exposure time: | LRGB (36x6x6x8)*600s, color channels 2x2-binned |
| Total exposure time: | 9h 20min |
| Location: | La Palma, Roque de los muchachos |
| Comments: | The color channels are way too shallow for the deep luminance (6h) exposures. If the background was steepend more until the noise became visible (as I usually do), then most of the tiny objects becoming visible appeared color-less. So I prepared this LRGB version, and a much deeper black-and white image with the luminance channel, only. |