I’m a little confused with trying to figure out how to setup the Rigel nSTEP STEPPER system in SGP. with my currentl SCT scope. I’ve been using the Optec TCF-S focuser for well over a year using the SGP autofocus on the Celestron 8’ SCT without any issues. However the TCF-S focuser is consuming a lot of back focus and forcing me to push the primary mirror forward which changes my F10 scope to almost a F12. Even with a 0.63FR I can only get to approximately an F8. Therefore I decided to go to a primary mirror focusing system and decided on the Rigel nSTEP STEPPER kit. I went with the Rigel system mainly because it has worked so well with SGP and my ED102 steup…
Here/s what I am discovering with this setup using the Regel focuser, SGP and the SCT - For the SGP autofocus to work with this setup I need the primary mirror focusing knob to be turning in the clockwise direction and have the step count numbers to increase so SGP autofocus can move out of focus and then lower the step numbers to achieve the “V” curve. In the Equipment Profile under the Focus tab there is a check box to “Reverse direction” however during my testing it does not appear to work.with or with “Reverse direction” checked or unchecked, when the focuser knob is turning clockwise the step numbers are still decreasing. I also tried in the ASCOM driver to use the reverse direction and that seem to really screw up things, it was like adding a negative number, say I was at step 20,000 and I wanted to go to say step 21,000 and I put 21,000 in the GoTo it would end up at 19,000 not 21,000. Like it was adding a negative number.
Maybe I’m thinking this all wrong or I’m doing something wrong but I just can’t seem to work out the correct settings. Any advice/help would be greatly appreciated. Sorry for being so long winded.