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.

Exactly my observation, Guido! I always guided in 2x2 mode and had to set proportional gain as high as 300. That should be a thing of the past with Hy's fix though.

It actually confused and frustrated me quite a lot, that I had those incredible good results with a QHY5 at 2x2 binning, but could not get an ASI 224mc at 1x1 to guide at all. It just went all over the place and aborted. Now it's clear that the proportional gain was much too high, as I was using the settings from the 2x2 binning.
I only got suspicious recently when I started to play around with PHD2 guiding. There QHY5 and ASI224mc worked fine as expected. With this experience I got back to INDI's internal guider and used the default recommended proportional gain values and it worked with both cameras at roughly the same RMS performance only 2x higher than I was experiencing with 2x2 binning.
As a side note: PHD2 performs a bit better than the internal guider for me, so I am using this for now.

CS Guido