As an alternative to Mintron guys have used the "Astrovid 1/2"- StellaCam II B&W" with a separate remote control box for slow shutter speed [$800US]
Take a look here
http://www.astrovid.com/product_images/139.jpg
Shevill Mathers in Tasmania is getting great results with one here
http://www.apstas.com/astrotas/mathers/AstroVideo.htm