Sold. Thank you Renzo
I bought this a few months ago from another Astromart member and am finding that I don't have the time to use it (I haven't even tried yet). This is an ST-4 with the SBIG flip-mirror. It has all of the cables but not the software that would allow it to be controlled by a PC (the original software was designed for use with DOS based computers). If you have a computer capable of running native DOS the software is downloadable free of charge from the SBIG website. I bought this ST-4 from a published astro-imager that used it frequently with great results. The flip-mirror is an integrated part of the unit and allows you to focus without having to remove the imager/guider. I'll sell it for what I paid which is $500.00 plus shipping.
Thanks for looking!