Fighting the mid-summer twilight and a waning moon, M17 emerged from the southern horizon last night through a short series of 4 x 5 minute exposures at ISO800.
A sequence of 10xflatfield, 10xbias and 5xdarkframes helped to minimise image noise, coupled with an Astronomik CLS deep-sky filter to lift the nebula from the light sky background.

Williams Optics ZS80ii, Canon 300D
EQ6 autoguided, 4 x 5 mins @ Iso800