M20 - also known as the Trifid Nebula.
This is a more magnified and detailed image of the Trifid Nebula (see image: M8 and M20)

Image capture and processing information:

Date/Location: September 15, 2007 Lake Sonoma, Sonoma County, California
Instrument: SBIG ST-2000XCM through a Celestron CM-1100 Schmidt-Cassegrain reflector using an Optec NextGEN WideField 0.50X (NGW) Telecompressor
Focal Ratio: f5.0
Guiding: Self-Guiding camera
Conditions: Visually clear but hazy
Weather: 54 F, moderate breeze
Exposure: 5 minute single exposure
Processing: Focused and captured with CCDOPS. Image processed using CCDOPS and Adobe Photoshop CS2