M101 - The Pinwheel Galaxy

22:50 13/4/2007 UTC

M101 taken under dark sky in Artjärvi. Too bad I quit imaging after clouds rolled in, since sky cleared later and sky went very dark. Even the conditions weren't the best possible, sky was dark enough to enable 5 minute subs. Even longer subs could have been possible. In 5 minutes sky barely moves the histogram. I also adjusted my polar scope which seemed to improve the polar alignment a lot.

Camera: Modified Canon EOS 350D | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Orion Skyview Pro, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Baader IR/UV block | Guiding: , Orion ShortTube 80mm f5 refractor, QCGuider, Teleskop-Service 1.5x Barlow, Phillips ToUCam Pro II webcam | Exposure: 8x300s (40m) ISO800 f6, 6 darks, 15 flats, bias | Software: IRIS, GIMP | Location: 60°44'00"N 26°12'46"E (Tähtikallion Observatory/Artjärvi, FI)