I found this link interesting and want to share it with all. Those having SCTs of various sizes including some Meade SCTs can now reduce their effective F/ratios to f2. At present not all sizes are catered for however this might change down the track a bit. There are some very impressive images taken with the HyperStar, and elsewhere I have seen some good images acquired with a digital rebel, instead of an sxv or what have you..
The link is :
http://starizona.com/acb/hyperstar/index.aspx
The image below is from a 11" nexstar GPS, 10x30sec Altaz mounted with an sxv-h9c
cheers,
Doug