The Horsehead Nebula, Barnard 33
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luminance: Ha 3 hours, RGB 1.4 hours. Exposed in Dec 2008.
Equipment: For the luminance, NP-101 on a AP600 mount with SXV-H9 camera. For the color, Takahashi 180E reflector robotically controlled on a Paramount with ST2000xcm camera at the Tzec Maun foundation in New Mexico.
Processing: Combined in Maxim D/L, processed in Photoshop CS with lots of hide-all layer masks and with Noel Carboni's Astronomy Tools. I also blended a the red channel with the Ha to keep the color data from getting washed out a la Robert Gendler's blending technique.