本帖最后由 0003f 于 2010-9-5 15:53 编辑
经过仔细甄选,觉得这张m31无论是清晰度还是色彩都无愧酷图之美名,遂决定将其作为参赛作品。来自Capella天文台,版权所有,禁止转载。图片较大,请耐心等候。 CCD: SBIG STL-11000M
Image Type, Orientation: Four frame LRGB mosaic, North is at 11:45h
Exposure time: L: 10x600 sec., R,G,B :3x600 sec. for each subframe, all 1x1 bin (12h40m total)
Exposure date: September 11th..15th, 2007
Location: Skinakas Observatory at Crete, Greece, remote-controlled from Velbert, Much and Arolsen/Germany
Filter: SBIG 2" LRGB filter set for STL
Instrument: Ganymed 60cm-Hypergraph in primary focus (f=1815.9 mm)
Photographer: Stefan Heutz, Stefan Binnewies, Josef Pöpsel |