M 33 – Pinwheel Galaxy Date/time: 30.08.2008 0:55 to 30.08.2008 01:55 Ambient conditions: 10°C, transparency 4/5, seeing 3/5, Location: Aach, Germany
Equipment: Telescope: Celestron SC 8” with focal reducer Alan Gee at f/6 Mount: CGE Guiding: ST-4000XCM Camera: SBIG ST-4000XCM Acquisition: Software: CCDSoft V5 FOV, Image scale: 43.4 x 43.4 arcmin, 1.27 arcs/pixel Sub-exposures: 60min (6 x 10min) lights at –20°C, 16 x 10min darks, 16 x 2s skyflats at –10°C, Processing: Calibration, stacking, DDP, hot pixel reduction in Images Plus 3.8, curves, levels and sharpening in CS3, GradientXterminator, noise reduction with Carbonis Actions, color enhancement with Gabani´s method, green cast elimination with Pixinsight LE 1.0. Comments: This was one of the first images from M33 with the combination C8 and ST4k. Strong light pollution and vignetting degenerated the image. Only with big processing efforts this final result was possible. Download full size image:Information Filename: galaxies/m33_2008-08-29_full.jpg Filesize: 3319650 Kb Download limit: unlimited
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