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Scope: Megrez II f/4.2 Location: Laguna Mountains, CA 4 September 2005 Camera: Artemis285
Exposure: 8 x 300 sec H-Alpha (1x1), 8 x 60 sec UV/IR Block filter (1x1) , 8 x 48 sec RGB Exposures (2x2).
Processing: Images were captured with Artemis Capture (as FITs). Aligned/stacked in Registax 3 and saved as FITS. Luminance, H-Alpha, UV/IR Block, and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart. The H-Alpha exposure was the main exposure for the luminance construction. Due to the short RGB times, the HA exposure (with stars removed) was used as a "lighten" combine in the red channel . Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color balancing and final touches were done in Photoshop. SGBNR was used to smooth background noise on the final result. Final Image size is approximately 1010x1376.
All exposures in this image were guided; North is up in this image. LBN 400 is an emission nebula located in Cygnus about midway between the Cocoon Nebula and the North American Nebula. The Vertical FOV is 90'.
Image center is located approximately - Equatorial 2000: RA: 21h 21m 33s Dec: +43°45'22"