These days when it can be 60* in the evening and 20* at night are killing me. It is not uncommon for me to see a 2* or more drop during a single narrowband exposure, and that puts focus out of the CFZ during the latter part of the exposure. What I would like to do is use temp compensation during the exposure and then have the AF routine run as usual. Unfortunately, best I can tell, my Rigel USB nStep won’t let me do this. I have also build an Arduino-based focuser that came with an open-source ASCOM driver. It is not clear to me whether this driver can support what I want to do, but I can at least modify it if I need to.
I recall a thread that I can’t find now where I think Ken explained that if an ASCOM focuser has an internal temp compensation capability, SGP will disable it when the AF routine runs. So, what I’m looking for is the ASCOM property that is used for this. I think it would require toggling the TempComp property off for AF and then toggling it back on again when the AF routine is done. Is this correct?