Here's a third version (1) (2) of M17, aka the Swan Nebula.
Heritage Park Observatory, Cedar Park, TX
Exposure: 90 x 90 seconds (2:15)
Camera: Modified Canon Digital Rebel XT (350D)
Scope: Meade LX200 @ f/6.3
Mount: Meade LX200
Guider: ST80, Meade DSI
Software: PHD Guiding, Nebulosity, Photoshop