CLICK ON IMAGE FOR FULL SIZE VIEW
Scope: Megrez II 80mm at f/4.6, Location: Dos Picos Park, Ramona, CA 7 July, 2007, Camera: Artemis285
Exposure: 8 x 420 sec H-Alpha (1x1), 8 x 60 sec RGB Exposures (2x2).
Processing: Images were captured with Artemis Capture (as FITs). Aligned/stacked in Registax 4 and saved as FITS. H-Alpha and Color channels were scaled and color balanced in Astroart. Channels were co-registered in Astroart. Curves and Levels applied in Photoshop to the Luminance construction to optimize object features. Luminance construction consisted of the H-Alpha exposure. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color adjustment made to correct the color shift created by Luminance application. A light background noise filtering was applied with PixInsight LE SGBNR. Selective sharpening was applied to nebula features in Photoshop with a layer mask. Final Image size is approximately 1392x1044.
North is up in this image. This is a hydrogen emission complex catalogued as Sh2-115 and Sh2-116. Sh2-115 is the lower brighter area; Sh2-116 is the longer dimmer nebula in the upper part of the image. The little round ball in the upper right is a planetary Nebula catalogued as PLN 85+4.1. This field is located in the constellation of Cygnus - a little less than 2-1/2 degrees from Deneb on its opposite side from that of the North American Nebula. The Horizontal FOV is 84'.
Image center is located approximately - Equatorial 2000: RA: 20h 33m 53s Dec: +46°55'44"