Horsehead NGC 7331 Horsehead

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(Click here for my first attempt - Vixen 102F/ST-237 on 10/06/2001)

Date: September 6, 2005
Exposure: LRGB: 200:110:140:165
40 x 300s L, 7 x 600s R, 10 x 600s G, 11 x 900s B
Processing: CCDAutoPilot2 in control for all images - CCDSoftV5 for image acquisition. MaxIm for image calibration,(5 each RGB flats, bias subtracted and median combined, 60 bias frames median combined, 20-900s darks Sigma Reject combined), alignment, normalization, stretch, and RGB combine. 2 iterations of CCDSharp on the Luminance layer. Photoshop CS for RGB processing,final adjustment and jpg conversion.
Conditions: Good, clear with nice transparency and lower humidity (60-70%) Mag 4-5 Skies
Scope: RCOS 16" Truss @ f/6
Camera: ST-10XME/CFW-8A -10°
Comments: This is my "Second Light" image with the RCOS 16". Taken over multiple nights, I was fortunate to get the luminance on the best night when the focus runs were indicating 1.7" - 1.9" FWHM. We had a hurricane sitting off the coast of Florida that didn't move for 3 days and this kept the dry cool weather sitting right on top of us. Now I know what it is like to image in California all the time :-))