I have been asked to develop an Opto-Isolator for the Sbig camera to go between the Sbig DB9 Guider and a 6 pin RJ12 Guider input on the Gemini telescope controllers. The Gemini and Celestron use the same pin out for the Guider input. I don't have a Sbig camera to be able to test this Opto-Isolator with. Is there anyone in the Phoenix Area that has a Sbig camera that uses the DB9 to RJ-12 cable and is willing to test this? This unit replaces that cable. I would like to work with anyone who is willing to test this unit. Thomas Hilton Tom at astronomystores dot com -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.