M 33                                           

 

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Image Information

Object	M 33
Date(s)	September 15, 16 2006 (2 nights)
Optics	Takahashi BRC-250 10 inch f/5 Ritchey-Chrétien astrograph with a 1,268 mm focal length
Mount	Losmandy G-11 with Gemini Level 3 V 1.1
Camera	SBIG STL-11000M on loan from CSU Fresno Physics Department (thanks to Fred Ringwald)
Guiding	Internal selfguiding with dithering
Field Scale	1.45 arc seconds / pixel
FOV	96 x 67 arc minutes
Camera Cooling	-15 C Regulated Thermoelectric
Filter(s)	Astrodon True Balance LRGB I-series 50mm
Location	Shaver Lake - Wildflower:  N 37O 03' 22", W 119O 19' 30" at 5,470 feet
Exposure(s)	L = 12 x 1200 seconds, RGB = 7 x 1200 seconds each (11 hours total)
Binning	All channels at 1x1
Camera control	MaxIm DL 4 V 4.53
Processing software	MaxIm DL 4 V 4.53, Photoshop CS2 V 9.0
Image notes	Processed images were fully calibrated, aligned, sigma clip combined and unsharp-masked.  If Ha data were to be added to this image, it would make an improvement.  Some of the color has been washed out when the luminance channel was added.