AuxTel Mount Fails to Move and Times Out#
Overview#
In this troubleshooting guide, we address an issue where the telescope times out while getting into position.
All ATCS CSCs indicate no FAULT
.
Error diagnosis#
The queued latiss_aquire_and_take_sequence.py
script reports the following error:
File "/net/obs-env/auto_base_packages/ts_observatory_control/python/lsst/
ts/observatory/control/auxtel/atcs.py", line 1658, in wait_for_inposition
raise RuntimeError: Telescope timed out getting in position.
No ATCS CSCs is in FAULT
, but the ATMCS EUI did indicate several low air pressure FAULT
.
However, since no CSCs were actually reporting FAULT
, the leak might not be critical
and the proximate cause in this case might actually being a lost DDS message between the ATMCS and ATPtg CSCs.
Procedure Steps#
From LOVE
Stop the Scheduler and clear any pending scripts : In the queue send the
auxtel/scheduler/stop.py
script and resume queue.Cycle the ATPtg CSCs: Transition to
STANDBY
and back toENABLED
.Confirm mount is now responsive: Queue SAL script
auxtel/point_azel.py
, specifying an azimuth and elevation some distance away from the current mount position, and observing mount motion.
az: 88
el: 80
Or
ignore: []
rot_tel: 0
slew_timeout: 240
target_name: AzEl
wait_dome: false
az: 88
el: 80