I've started using my ZWO EAF, with NINA, to give myself more time to contemplate life while I'm out imaging instead of using that time to fiddle with my gear. Unfortunately, I'm now spending all of my time fiddling with my gear and getting even less to show for it.
Focus is of course one of those things where "close but no cigar" is just not going to cut it, and at this point autofocus isn't cutting it.
First night out I just accepted the defaults and let NINA do its thing. Stars were *close*, but not good enough to integrate with with previously collected data where I'd focused manually (just using a Bahtinov mask and the ZWO hand-controller for my EAF).
Last night I altered the settings so that the bin mode was 2x2, dropped exposure time from 6 seconds to 3, and had it take two exposures for every point.
I ran the autofocus routine and, while it did seem to take a *VERY* long time, it seemed to have nailed it (I'd also just installed a filter wheel so everything was put way out of focus, anyway, so I figured that was par for the course). Again, the initial focus it found looked good, so I started my sequence that I'd programmed for the evening (which was already getting frustratingly long due to numerous failed autofocus attempts, having to do field surgery on a new EFW, etc.).
My sequence had it do an initial autofocus, followed by doing a refocus at each filter change.
The initial autofocus when the sequence started seemed to throw off the the autofocus I'd it had just performed and it even gave an error message saying something about HFR not changing enough and that I just increase step size. Since it had *just focused*, I determined this to be a nuisance remark, cheerfully encouraged it to go ____ itself, and keep going. Subsequent autofocus attempts...happened...but the results seemed to indicate the stars had all eaten too much and mostly just wanted to sit around in their "fat pants". Since I like stars fit and trim, I rejected them all.
Since autofocus - when it works - takes FOREVER, and kind of doesn't work anyway, then what's the point?
Okay, obviously lots of people get it to work, so any tips/suggestions would be appreciated!