Horsehead M1
The Crab Nebula		 Horsehead

(Click on image for Full Resolution)

(Click the here for my previous best effort)


Date: December 3,4,13,15, 2004
Exposure: LRGB : 100m:70m:100m:90m
10 x 600s L, 7 x 600s R, 10 x 600s G ,9 x 600 B
Processing: Guided and acquired with CCDSoftV5. MaxIm for Image calibration,(20 flats each LRGB, dark subtracted and median combined, 40 bias frames median combined, 20-900s darks Sigma Reject combined), alignment, normalization, color combining. 3 iterations of CCDSharp for the Lum. Photoshop CS for final color balance, gradient removal and jpg conversion.
Conditions: Clear, good transparency, terrible seeing
Scope: C14 @ f/11
Camera: STL-1301 w/ SBIG filters, -20°C
Comments: I took this over several nights of bad seeing. This is the first light test image with my STL-1301. The 16 micron pixels give me a 0.83"/pix at F/11 and this is about perfect 3.3 sampling for my usual seeing conditions. Although most of this was taken testing a beta mirror lock for the C14 and breaking in the new camera, the result is encouraging.