M17 - The Omega Nebula


The Omega Nebula, also known as The Swan, and NGC 6618 is found in the constellation Sagittarius. This star forming region shines at magnitude 6.0 and is 46 arc-min across.

RRGB image. 12" LX200, AO7, and SBIG ST-8E on August 18, 2001 (Oregon Star Party). Taken while M17 was at 27.5 degrees above the horizon, and color balanced to 1:15 : 1.00 : 2.05 plus extinction correction.

Filter Exposure Count Binning
Luminance 20 min (R data)
Red 20 min 2 x 10 min 1x1
Green 15 min 3 x 5 min 2x2
Blue 15 min 3 x 5 min 2x2

The red data was sharpened for luminance use.  The RGB's for color uses were blurred for smoothing.

ST-8E with AO7 and 6.3 focal reducer on the 12" LX200.  A composite of thirty 20 second exposures.  Processed with CCDSharp, and DDP.  Taken at the ARGO site on July 18, 2001.

Previous best, taken at the 1998 Oregon Star Party on Aug 21:

The image above is taken at f/3.3 with the 12" LX200 and 416XT. It is a composite of two 1 minute exposures.