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M 33

M 33 – Pinwheel Galaxy

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

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

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  

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.

The steady air conditions made good tracking possible. Even if M33 was relatively low the final result is OK for a test image.

Download full size image:

Filename: galaxies/m33_2010-08-09_full.jpg
Filesize: 2833369 Kb
Download limit: unlimited



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