Pelican Nebula IC 5070



Scope: Megrez II  f/4.0 Location: Del Mar, CA   18 August 2005  Camera: Artemis285

Exposure: 10 x 300 sec H-Alpha, 8 x 45 sec IR Block, 8 x 45 sec RGB Exposures

Processing: Images were captured 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.  The H-Alpha exposure was the main exposure for the luminance construction - the IR block exposure was not used. Star sizes were managed with a less stretched version of the HA exposure and combined back with the main 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 1040 x 1392.

All exposures in this image were guided; North is up in this image. Check the date of the exposures - this image was taken in a full moon. The narrowband HA filter and the HA emission characteristics of this nebula allow for reasonable contrast even in the light of a full moon. IC 50 70 is referred to by common name of the "Pelican Nebula" due its distinctive shape in the form of a pelican profile. This image replaces an earlier image that can be seen in the Archives here.  The Vertical FOV is 90'.

Image center is located approximately - Equatorial 2000: RA: 20h 51m 31s Dec: +4400'52"


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