Canon has released a special version of their 20D digital camera specifically designed for astrophotography. It lacks the IR filter present on most modern digital cameras, allowing better response from H-alpha lines in emission nebulae. Also it has a live-focus mode which allows you to see the results of focusing the camera in real time on the LCD screen. Both of these are enormous improvements for astrophotography. I'm trying to find more information, but so far Canon's release information (which was made available yesterday) is only available in Japanese. DPreview has an early review up but they don't have much information either. Hopefully this will get released into the American market, right around when I graduate (2031) and have an increased income and the liquidity to afford an upgrade to my DSLR.