arcalpin i must admit, i did not test every aspect of the following, it's just my personal perception and some guessing. Maybe there is another forum member who can clarify it better.
I have a Celestron SCT which needs the focuser to be rotating counter-clockwise. It is like this so the primary mirror "falls" into its place by gravity. Of course that is not necessary for other types of scopes like refractors etc.
So in order to achieve that, i turn on my EAF setting to rotate CCW. At the begin of any session, i roughly focus my scope – let's say the focus point is at 30.000 steps then. Then i let ASIAir do its autofocus routine. From my perception, the EAF will then raise the focus point to something like 32.000 steps and gradually decrease again, in order to create the right part of the v-curve until the stars get out of focus again (which is the lower point of the v-curve). It continues until roughly the same amount of decrease is done on the left side of the v-curve to get to about 28.000 steps.
I guess, if the EAF setting would be set to rotate CW (clockwise), then it would behave the other way round: it would first decrease the steps below the current steps, then increase them. In other words, it might create the v-curve from left to right.
As i said, please take it with a grain of salt. Or even better give it a try and let us know 🙂
Olli
