https://bugs.kde.org/show_bug.cgi?id=523510
Bug ID: 523510
Summary: Polar alignment tool in EKOS incorrectly displays ALT
and AZ information during adjustment phase. (ALT and
AZ are switched)
Classification: Applications
Product: kstars
Version First 3.8.2
Reported In:
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
DESCRIPTION
When performing polar alignment in EKOS, after successfully capturing and
solving the three images, the AZ graphical arrow and numerical error instead
shows ALT figures -- and vice-versa; ALT shows AZ.
I have been able to successfully complete the polar alignment process by
adjusting the altitude according to the hints for azimuth, and adjusting the
azimuth using the hints for altitude. I have to interpret a right-pointing
arrow as "up", and down arrow as "left" (in the AZ display). vice-versa for
the altitude hint -- I treat down-arrow as "left" and up-arrow as "right".
This works, but obviously is not the intended behavior of the tool, which
displayed this information properly until recently.
It was only after a lot of trial and error that I realized what was going on --
and I imagine that for anyone trying the polar alignment tool for the first
time, one might conclude that the tool was broken and unusable, as adjusting
the alignment according to the tool's displayed error indicators just makes the
alignment worse. This might also cause the mount to perform dangerous and
unexpected movements in the case of a future integration with an automatic
polar alignment mechanism (as I hear is in development).
STEPS TO REPRODUCE
1. Slew the telescope to the home position, select appropriate values in the
alignment tab for filter, exposure, etc.
2. Click the "start" button in the polar alignment subsection of the alignment
window. Wait for the three exposures to be taken and solved.
3. Note the displayed results, and start automatically refreshing the updated
error by clicking "refresh".
Start making adjustments according to the displayed arrows.
OBSERVED RESULT
Physically adjusting the *azimuth* on the mount changes the displayed value and
arrow for the *altitude* on the screen, and vice-versa.
EXPECTED RESULT
Physically adjusting the *altitude* on the mount should change the updated
error value and arrow for the *altitude* information displayed on the screen;
same goes for azimuth.
SOFTWARE/OS VERSIONS
I'm running kstars/EKOS version 3.8.2 stable under Linux Mint 22.3 Cinnamon
64-bit
KDE frameworks version: 5.115.0
Qt version: 5.15.13
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