Paul, those are amazing! Is that what you actually see through the viewfinder/CCD, or do they need post-processing?

Ceva, the camera I use has a monochrome sensor, so what I actually see is always in black and white. Here is a screenshot I took a while back that shows what I saw while capturing an image of M64 earlier this year:



I didn't get the colour data for that shot, so I just cleaned up the B&W image:



There is a lot of post processing involved - dark frame subtraction, alignment & stacking, historgram stretch to pull out the fainter details. I would say that a good 50% of the final result is in how you post-process the data. The good thing is that you can do that during daylight hours or on cloudy evenings, so it lets me do something astronomy related even if I can't see the stars .