Butterfly Nebula (IC 1318) around Sadr (Gamma Cygni)

Camera: Canon EOS 300D Digital Rebel
Telescope: Orion ED80, 378mm @ f/4.7
Filter: IDAS LPR
Exposure: 27x58s=26 min @ ISO1600
Mount: Celestron ASGT
Processing: Dark, flat and bias calibration, alignment, stacking and digital development in IP 2.5. Alignment in Registar.
Levels, curves, skyglow & noise removal and shapening in Photoshop CS with Neat Image & Gradient exterminator.