IC1275 - IC4685 Region - Sagittarius
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Scope: C8 at f/4.8,  Location: Laguna Mountains, CA   17 June 2006,   Camera: Artemis285

Exposure: 5 x 360 sec H-Alpha (1x1),  6 x 120 sec IR/UV Block Filter (1x1), 6 x 60 sec RGB Exposures (2x2). Two Frame Mosaic

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked in Registax 3 and saved as FITS. Luminance,  H-Alpha, IR/UV Block,  and Color channels were scaled and  color balanced in Astroart. Channels were co-registered in Astroart.   Curves and Levels applied in Photoshop to optimize object features. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB) - G2V calibration factors and Atmospheric Extinction factors were applied.   SGBNR was used to smooth background noise on the final result.  Mosaic join was performed in Photoshop. Final Image size is approximately 1218x1889.

All exposures in this image were guided; North is up in this image.   This image is a two frame mosaic. The individual halves (IC1274-IC1275 here)   (IC4685-NGC6559 here) are available on this website. The two reddish orbs in the upper left are IC 1274 and IC1275  -  from top to bottom. The small bluish object in the lower central part of the image is NGC6559. Finally, the larger object with the squiggly dust lane in it in IC4685. The Horizontal FOV is 28'.

Image center is located approximately - Equatorial 2000: RA: 18h 09m 39s Dec: -2352'16"

 

 

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