M 57 - Ring Nebula Date/time: 11.08.2010 01:45 to 11.08.2010 03:40 Az./Alt. positions: 268° / 55° to 285° / 34° Ambient conditions: 20°C, humid partially cloudy sky, transparency 3/5, seeing 3/5 Location: Villa Tatti, Tuscany, Italy Equipment: Telescope: Deltagraph 300mm f/3.3 Mount: CGE Camera: SXVF-M25C Guiding scope: Orion short tube 80mm f/5 Guiding camera: ATIK 16IC Filters: IDAS LPS Acquisition: Software: Maxim DL 5 FOV, Image scale: 62.5 x 54.8 arcmin, 1.62 arcs/pixel Sub-exposures: 18 min (9 x 2 min) light frames No darks, 100 bias, 50x0.2s flats Processing: Images Plus 3.75: Calibration of light frames with bias and flats, DDP Maxim DL: Stacking of calibrated frames with SDMask, color balance R85:G100:B120 CS3: Levels, noise reduction with Carbonis Actions Comments: Very bad weather. Only 9 frames were useable. Anyhow, M57 is too small for this image scale.
Download full size image:Information Filename: nebulae/m57_2010-08-10_full.jpg Filesize: 2305401 Kb Download limit: unlimited
|