Hi I have an original SBIG Autoguider and camera with the old RS232 port etc and was wondering if it could be used on a modern telescope mount that has an ST-4 port. Any help re wiring this up or how it might be utilised would be useful to me.
Ironically many telescope mounts have "ST-4" labeled RJ-12 connectors on them, which is not directly compatible with the original ST-4's DB-15 jack. Many ST-4s were however sold with an adapter cable that went from the DB-15 connector on the control box to the RJ-12 jack. Unfortunately we don't have that adapter cable available, as this product was discontinued many years ago. You would have to build your own. Here's a typical "ST-4" telescope connector jack: If you look at page 41 of the ST-4 manual the pinout of the DB-15 connector is listed: http://diffractionlimited.com/wp-content/uploads/2016/03/st4man.pdf So what you need is an adapter cable, as follows: Function ST-4 Telescope North 13 5 South 7 4 East 4 3 West 10 6 Common 5,8,11,14 2
