This image of the Veil Nebula, NGC7960. is a combination of a color image taken with a modified Canon 350D and a monochrome one through an H-alpha filter taken with a Canon T1i

Exposure -
Color - 35 - 58s light frames at ISO 800 plus 23 darks and 25 flats.
H-Alpha 29 light and 20 dark frames at ISO 3200 and f/4 for 2 min each with 8 flats for calibration.
Processing in Images Plus and Photoshop.