IC2177 "Seagull" in Monoceros



Scope: Megrez II at f/3.2,  Location: Del Mar, CA   20 January 2006, Camera: Artemis285

Exposure: 7 x 360 sec H-Alpha (1x1 bin),   8 x 60 sec RGB Exposures (2x2) each for a two frame mosaic.

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked in Registax 3 and saved as FITS. H-Alpha, and Color channels were scaled and rough color balanced in Astroart. Central gradient removal was done in Astroart using the green exposure data for the gradient generation. Channels were co-registered in Astroart.  Curves and Levels applied in Photoshop to optimize object features. Each frame was processed separately with final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).  Top and bottom half mosaic frames were combined in Photoshop. SGBNR was used to smooth background noise on the final result.  Final Image size is approximately 1380x1947.

All exposures in this image were guided; North is up in this image. This is an extended cloud of gas and dust popularly known as the "Seagull Nebula". The Seagull is a composite of several objects. In this image, open clusters NGC 2335 and NGC 2343 can be seen at the upper and lower "left wing" respectively. The bright object at the tip of the "right wing" is Cederblad 90 - an emission nebula. This image replaces an earlier image that can be seen in the Archives here.  The Horizontal FOV is 125'.

Image center is located approximately - Equatorial 2000: RA: 07h 06m 10s Dec: -1117'06"


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