SH2-115 and SH2-116 in Cygnus



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: +4655'44"


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