M 33 – Pinwheel Galaxy Date/time: 09.08.2010 02:25 to 09.08.2010 04:55 10.08.2010 02:40 to 09.08.2010 03:55 Az./Alt. positions: 90° / 49° to 140° / 74° 94° / 52° to 112° / 66° Ambient conditions: 18°C to 20°C, transparency 4 to 5 / 5, seeing 5/5 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: No Acquisition: Software: Maxim DL 5 FOV, Image scale: 62.5 x 54.8 arcmin, 1.62 arcs/pixel Sub-exposures: 2 h (40 x 3 min) light frames No darks, 100 bias, 50 x 10 ms 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: Curves and Levels, GradientXterminator, selective High Pass on galaxy core and arms, color enhancement of a and b channels in Lab space, noise reduction with Noiseware Professional. Pixinsight LE 1.0: green cast elimination. Comments: The steady air conditions made good tracking possible. Even if M33 was relatively low the final result is OK for a test image.
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