Hi, We are using SBIG ST-7 CCD as a guider for our 1 meter telescope. The Telescope connector of the ST-7 is connected to 4 relays that operate in turn the guider motors of the telescope. Each of the pins with signal from the ST-7 is connected to one relay as can be seen in the attached PDF file. We are now in need to replace our ST-7 CCD with ST-i CCD that will serve as a guiding CCD for a new instrument. However, we could not figure out how to make the connections from the ST-i telescope jack to our relays. With the ST-7 we are using the +5V that is in the Telescope connector and the signal from the corresponding direction pin (see attached figure), but the ST-i does not have a +5V pin and any configuration that we tried to connect the ST-i pins to our relay did not work. How is it possible to operate our 4 simple 5V SP relays using the ST-i guider output? Thank you, Shai
Shai, please contact hardware guru of these cameras: Craig Herrin Email: craig AT sbig DOT com Best Regards, Jan
