EAF and Autofocus on ASIAIR PLUS

owenmolly0409

I have read on some forums that if you use the autofocus feature in ASIAIR that you do not need to enter anything for backlash in the focuser system? Is that true? Thanks!

w7ay

owenmolly0409 Is that true?

Yes.

Notice that the ASIAIR always sweep from some high EAF step count whenever it tries to measure the U curve.

The ASIAIR first drives the EAF to a high step count, and sweep the count downwards. After that the ASIAIR again set the EAF to a high step count, and sweep downwards to the target EAF step location. Both times, the backlash would have cleared by the time the EAF is swept past its backlash.

The backlash still exists, it just cancels itself out.

Chen

owenmolly0409

Thanks so much Chen. That all makes sense now.

Bonzer2u

Chen, would the zero backlash setting work equally as well using nina or sharpcap's autofocus routine?

w7ay

Bonzer2u Chen, would the zero backlash setting work equally as well using nina or sharpcap's autofocus routine?

No idea. I run exclusively macOS nowadays and use my own V curve program on INDIGO and macOS. (I also discontinued using SharpCap when they went to subscription model.)

Chen