Horsehead M65 Horsehead

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Date: January 14, 2005
Exposure: LRGB : 95:50:50:100 19 x 300s L, 10 x 300s R & G, 20 x 300s B
Processing: CCDSoftV5 for image acquisition.MaxIm for image calibration,(25 each LRGB flats, dark subtracted and median combined, 80 bias frames median combined, 40-900s darks Sigma Reject combined), alignment, normalization, stretch, and RGB combine. 3 iterations of CCDSharp on the Lum layer. Photoshop CS for LRGB processing,final adjustment and jpg conversion.
Conditions: Clear, good transparency, average seeing
Scope: C14 @ F/11 (0.83 arcsec/pixel)
Camera: SBIG STL-1301 -20°
Comments: The skies were dark and clear. Good transparency, but the seeing was not great. The wind came up about half way through the blue. I had just finished training my PEC using PEMPro and it came out pretty good. As a test, the Luminance was done unguided. The seeing changes so much in a single night that it is hard to get all of a series at the same focus point. There are always compromises :-))