Ok, I see. My frame size is much smaller than yours since I'm using a ccd with a couple thousand less pixels on a side. For a DSLR I could see a larger dither distance since you do have many more pixels, especially if it helps in another way. Are you guiding with PHD2 or Ekos Guide Module?

Using ekos internal guiding

Exactly

Yes, I wrote the algorithm for KStars to continue guiding if PHD2 loses a star and then reacquires it, but not for the Internal Guider. That's a question for Jasem.

I will send him a message.

Thanks,

Rob

Thanks. Yes, this was indeed a corner case which should be fixed in the next version. The fix landed in GIT if anyone wants to test it out.

I'll try it out tomorrow night, thanks!

This issue happened to me last night.
After losing the star the guider module stalls. Even after identifying and reacquiring the star (it puts a circle on it), it keeps saying the star is lost and the capture module hangs in the dithering process. I will test it too, thanks!

This is with the nightly KStars build of yesterday?

Not sure but I think it's the previous version, tonight I will update again and see if there is any change.

So I pulled the latest from Git and built it (are there nightly Windows builds somewhere?). The problem of the capture module getting stuck in dithering is indeed fixed. Thank you!

However, when setting the dithering to 10 pixels, it works for a few frames, then it doesn't hardly move at all. When this happens, the guider will say it lost track of the guide star, and then reacquire it and continue guiding. But it will do this for every frame from this point on. Hardly move at all, and say it lost the guide star. I believe this was what was happening before, I don't think this is new to this build. Maybe it's expecting the star to be 10 pixels over, but because it didn't move, maybe that's why it says it lost track?

But at least I made it through the entire evening without the capture module getting stuck! Sweet!

If you turn on "Guide" logging and send that over, it would help to figure out what's causing this.

Sure thing. Clear skies in the forecast tonight, so I'll be doing some imaging.