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Image Information:
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.