Towards top left of this image you can see the elongated trail of asteroid 12 Victoria. Around 50 subs at 3-minutes per sub with the Hyperstar III - bright Moon and a lot of thin high cloud but the asteroid still shone through. The bright star should be red. One thing to note, the images were dithered so that I could remove all the hot pixels with SDMask stacking - except if you use SDMask staking then it treats the asteroid trail as outliers and you lose your asteroid

So it is necessary to average stack which means you then need to manually remove all the hot pixels which is a right pain.
Greg
_________________
Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/