NGC 7822 in Cepheus



Scope: C8 at f/3.1 (HA exposure only), Megrez II  f/6.25 Location: Dos Picos Park, Ramona, CA   24 September 2005  Camera: Artemis285

Exposure: 6 x 360 sec H-Alpha (1x1),  8 x 120 sec Luminance (bin 1x1) with Baader IR/UV Block Filter 8 x 60 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,   and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart.  Central gradient removal of C8 exposure done in Astroart. The C8 H-Alpha exposure was the main exposure for the luminance construction - the Megrez H-Alpha was used for edge stars since the C8 edges are distorted. 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 luminance construction and the final result.  Selective layer sharpening was performed on prominent nebula features. Final Image size is approximately 1392x1040.

All exposures in this image were guided; North is up in this image. NGC 7822 is an emission area in Cepheus. It is just north of the brighter and more prominent Cederblad 214. The Horizontal FOV is 55'.

Image center is located approximately - Equatorial 2000: RA: 00h 03m 17s Dec: +6831'16"


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