LX200/LX200GPS wannabe Alt/Az CCD imagers - go beyond the 30 seconds you can get without field rotation. GPS users can train PEC with the field derotator in place to get much longer images.
Like new, in box - first $250 takes it, shipping included to CONUS. I just have too much stuff and I'm setting up a permanent observatory so I won't need it any more. Take a look at the M51 shot below, which I took with the derotator on 4/27