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M57 Ring Nebula, 15-16 July 2007, Lure Mountain France, 1600-meter elevation, inside the dome, Celestron 14 (14" SCT), full focal length i.e. 3.92 meters @f/11, SBIG ST-10XME CCD camera + CFW-8 filter wheel, AO-7 driven by Equinox Image, 143-minute quadcolor image (L = 26 x 3 minute, B and G = 4 x 5 minutes, R = 5 x 5 minutes). SBIG control : EquinoX Image, Image processing software : TINA. |
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