Horsehead NGC7023 Horsehead

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(Click here for my 2005 version taken with my 16" RC and STL-6303)

Date: June - July , 2008
Exposure: LRGB - 690m : 465m : 375m : 345m
46 x 900s L, 31 x 900s R, 25 x 900s G, 23 x 900 B
Processing: CCDAutoPilot4 used to collect data over multiple nights. CCDSoft for image acquisition, CCDStack on a x64 Vista machine for Image calibration, Astrodon LRGB filters (35 flats each L,R,G,B, Bias subtracted and Sigma Clip combined, 65 bias frames Sigma Clip combined, 40 x 900s darks Sigma Clip combined), alignment, normalization, FITS master files creation, and RGB raw TIFF creation. Photoshop CS2 for final LRGB processing, final layers adjustment and jpg conversion for the website.
Conditions: Good to Excellent, Mag 6-7 Skies
Scope: 10" RCOS Astrograph
Camera: SBIG ST-10XME, -15°
Comments: I images with this setup the same nights along with the FSQ/11K, so I have the wide field and the high Res under the same conditions. It is interesting how there are small differences in the colors that came out in each. While the stars are very similar, the dust is darker in this image and redder in the widefiled. They were both processed to try and match the background and the star colors.