Greetings,

I have already lost a few nights due to this bug (?)



First, I would like to know how exactly those mount limits work. I can't recall where or how but I used to have it Min Alt -1, Max Alt 90. My only concern is to set those limits to avoid going lower than the horizon and hitting my pier. I have never had an issue till now.

So let's put it that way, cause this is useful to all of us: How do we set those values to avoid slewing below the horizon?

Now (fully updated) while I am in the session I get this error that ruins the whole night.

<code>gain = 100, offset = 10, format = Raw 16 bit, encoding = FITS, binning = 1x1, ROI = (0+3008, 0+3008)"
[2023-12-25T21:23:31.745 EET INFO ][ org.kde.kstars.ekos.capture] - "Capturing 15.000-second O image..."
[2023-12-25T21:23:31.800 EET INFO ][ org.kde.kstars.indi] - ZWO CCD ASI533MM Pro : "[INFO] Taking a 15 seconds frame... "
[2023-12-25T21:23:33.804 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:23:33.994 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation at capture startup 1.487 below limit value of 2 arcsecs"
[2023-12-25T21:23:33.994 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation at capture startup 1.487 below limit value of 2 arcsecs"
[2023-12-25T21:23:36.462 EET INFO ][ org.kde.kstars.ekos.mount] - "Telescope altitude is below minimum altitude limit of 0. Aborting motion..."
[2023-12-25T21:23:37.495 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:23:38.460 EET DEBG ][ org.kde.kstars.ekos.mount] - Mount status changed from "Tracking" to "Idle"
[2023-12-25T21:23:41.871 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:23:42.466 EET INFO ][ org.kde.kstars.ekos.mount] - "Telescope altitude is below minimum altitude limit of 0. Aborting motion..."
[2023-12-25T21:23:47.560 EET INFO ][ org.kde.kstars.indi] - ZWO CCD ASI533MM Pro : "[INFO] Exposure done, downloading image... "
[2023-12-25T21:23:47.565 EET INFO ][ org.kde.kstars.indi] - ZWO CCD ASI533MM Pro : "[INFO] Download complete. "
[2023-12-25T21:23:47.797 EET INFO ][ org.kde.kstars.indi] - "FITS" file saved to "/home/stellarmate/Dropbox/Light/O/Light_O_072.fits"
[2023-12-25T21:23:48.300 EET INFO ][ org.kde.kstars.ekos.capture] - "Captured /home/stellarmate/Dropbox/Light/O/Light_O_072.fits"
[2023-12-25T21:23:48.310 EET INFO ][ org.kde.kstars.ekos.capture] - "Download Time: 0.72 s, New Download Time Estimate: 0.55 s."
[2023-12-25T21:23:48.311 EET INFO ][ org.kde.kstars.ekos.capture] - "Received image 72 out of 200."
[2023-12-25T21:23:48.489 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:23:53.740 EET INFO ][ org.kde.kstars.ekos.capture] - "Capture exposure = 15 sec, type = Light, filter = O, upload mode = 0, batch mode = true, seq prefix = _%t_%T_%F_%t_%T_%F_Light_O, gain = 100, offset = 10, format = Raw 16 bit, encoding = FITS, binning = 1x1, ROI = (0+3008, 0+3008)"
[2023-12-25T21:23:53.741 EET INFO ][ org.kde.kstars.ekos.capture] - "Capturing 15.000-second O image..."
[2023-12-25T21:23:53.791 EET INFO ][ org.kde.kstars.indi] - ZWO CCD ASI533MM Pro : "[INFO] Taking a 15 seconds frame... "
[2023-12-25T21:23:56.227 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:23:56.370 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation at capture startup 287.184 exceeded limit 2 arcsecs."
[2023-12-25T21:23:56.370 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation at capture startup 287.184 exceeded limit 2 arcsecs."
[2023-12-25T21:23:56.374 EET INFO ][ org.kde.kstars.ekos.capture] - "CCD capture suspended"
[2023-12-25T21:24:04.182 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:24:04.329 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 407.202 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:04.329 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 407.202 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:12.162 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:24:12.325 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 526.586 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:12.325 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 526.586 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:19.971 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:24:20.112 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 643.948 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:20.112 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 643.948 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:27.741 EET DEBG ][ org.kde.kstars.ekos] - Dark frame subtraction applied
[2023-12-25T21:24:27.902 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 761.968 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:27.902 EET INFO ][ org.kde.kstars.ekos.capture] - "Guiding deviation 761.968 is still higher than limit value of 2 arcsecs."
[2023-12-25T21:24:28.766 EET INFO ][ org.kde.kstars.ekos.capture] - "Autoguiding stopped. Aborting..."
[2023-12-25T21:24:28.766 EET INFO ][ org.kde.kstars.ekos.capture] - "Autoguiding stopped. Aborting..."
[2023-12-25T21:24:28.776 EET INFO ][ org.kde.kstars.ekos.guide] - "Autoguiding aborted."
[2023-12-25T21:24:34.711 EET INFO ][ org.kde.kstars.ekos.guide] - "Autoguiding started."</code>


Any idea?

At what altitude does it hit your pier? maybe it's not altitude but hour angle? I see my mount going below 0 all the time while slewing and it's not a big deal.

First of all, I believe the real deal here is to understand what are those and how we calculate those values. I wasn't able to find explanations about these, but instead only posts that no one knew how to deal with.

Jasem, you say you are below 0 too. But which is the 0 position? How can I say mine?

And the part that tricks me is: Why now? What has changed? I had no issues till May when I started my observatory.