Thank you very much for the explanation, Hy. You're right, I can save the bin settings in Indi. I'll set this to 2x2, problem solved. However, the GENERAL problem is the inconsistency in how parameters are treated by Ekos. Some are saved, others are not. Just as an example, if you change the Exp: setting (the one right next to the bin: setting that is not being saved in Ekos) from 1 to 5, it IS being saved and remains at 5 after re-start even though the corresponding Exp: setting in Indi is still set to 1! And then there is the Gain: setting in the CCD Tab that isn't displayed at all (shows "--" regardless of what gain value is stored in Indi) unless it is actively changed by the user. I find this behaviour confusing.

The average user (a newcomer for sure) doesn't see why some settings can be saved in Indi only although it is present in Ekos (and looks like it was going to be saved like many others actually are). Even I find this confusing at times (as you can see here) despite the fact that I use this software for years already. One never knows (or at least can't see) which parameters are stored in Ekos and which are not.

While we're at it, I had figured out how to save the binning in the guide module, but I am still at a loss how to save the default exposure time in the focus module. That exposure time will always default back to 0.5 s and when you forget changing that, it will not result in a satisfactory autofocus run when using a narrowband filter.
Can that also be set so it remembers the last preferred exposure time? 0.5 s is too short for most purposes, 2s at least makes more sense.
Thanks for thinking about it.
Jo

Jo, If I'm not mistaken, I think you can save the exposure times for different filters in the filter settings control that pops up from a button near the top of the capture tab, and it's also accessible on the filter tab, just to the right of the filter menu. The 2nd column is exposure time in seconds.
Hy

Thanks Hy!
Yes, I know that option and it works fine for a monochrome camera with a filter wheel. No problem there and I have the times set accordingly. But I do not see that option when I am using a one shot color camera, like the ASI1600MC or the ASI183MC. In those cases the filter settings option is greyed out and I cannot change the default 0.5s value. I forgot to mention that I was referring to narrowband filters when using a color camera. That also and most commonly applies to filters like the Optolong L-eNhance or a Tri-Band or Quad-Band filter, which are commonly used with OSC cameras and without a filter wheel. It would probably also apply if someone uses a manual filter wheel or a filter drawer with a mono camera, but I have not tried that out. I think the ability to change the default exposure time is dependent upon an electronic filter wheel being attached. Am I correct there?
Jo

I can confirm this issue (0.5 seconds), will work on a fix.

EDIT: Fixed in GIT.

Installed and looks like it is now remembering and restoring the last used exposure time.

Thanks Jasem!

Did you figure out the inconsistency of the aberations when changing binning? I tried changing from 1x1 to 2x2 last night and my guiding apparently improved tremendously but I'm wondering if the scaling is not changing automatically when binning is changed?

No, and I agree with you, it makes no sense. It should definitely not improve.
I have another problem, though, inasmuch as guide pulses in DEC aggravate the deviation, they do not fix it. If I switch off DEC guiding, I am far better off, so poor alignment is not the problem.
Any thoughts, let me know.
Jo

Right, the data displayed is simply not correct, IMO. The guiding errors are reduced by 50% (both in RA and DE) when changing from 1x1 to 2x2 binning which doesn't make sense.

I looked through the code and I'm quite certain that you're right, the values given by the internal guider don't take binning into account.
Will fix at some point in the next couple weeks if someone doesn't beat me to it.

I made the same observation. With 2x2 binning I had RMS values "too good to be true". But for 2x2 binning to work well, I also had to set the proportional gain much higher than recommended (2x - 4x). Could that be affected as well?

CS
Guido

Yes, Guido. Makes sense. The 2x2 binning guiding had error calculations that were too low, by a factor of 2.
This is now fixed in the source code and in the nightlies.
phabricator.kde.org/D29426
If you had come to like a certain proportional gain with binning greater than 1x1, you'll likely want to change that once you start using this fix.