AuxTel M1 Cover Fails to Open

Overview

This procedure explains the steps to follow when AuxTel M1 Cover fails to open during daytime checkout or at the start of night.

Error Diagnosis

This is possible following any daytime work which involves manually controlling the M1 Covers on AuxTel, such as the weekly C02 mirror cleaning.

auxtel/daytime_checkout/atpneumatics_checkout.py fails with:

Traceback error for SAL script atpneumatics_checkout.py

  Error in run Traceback (most recent call last):
  File "/opt/lsst/software/stack/conda/envs/lsst-scipipe-7.0.1/lib/python3.11/site-packages/lsst/ts/salobj/base_script.py",
  line 603, in do_run await self._run_taskFile "/net/obs-env/auto_base_packages/ts_standardscripts/python/lsst/ts/standardscripts/auxtel/daytime_checkout/atpneumatics_checkout.py",
  line 200, in run await self.atcs.open_m1_cover()File "/net/obs-env/auto_base_packages/ts_observatory_control/python/lsst/ts/observatory/control/auxtel/atcs.py",
  line 1074, in open_m1_cover
  await self.rem.atpneumatics.cmd_openM1Cover.start(timeout=self.long_timeout)File "/opt/lsst/software/stack/conda/envs/lsst-scipipe-7.0.1/lib/python3.11/site-packages/lsst/ts/salobj/topics/remote_command.py", line 487, in start
  return await cmd_info.next_ackcmd(timeout=timeout)
  File "/opt/lsst/software/stack/conda/envs/lsst-scipipe-7.0.1/lib/python3.11/site-packages/lsst/ts/salobj/topics/remote_command.py", line 191, in next_ackcmd
  raise base.AckError(msg="Command failed", ackcmd=ackcmd)
  lsst.ts.salobj.base.AckError: msg='Command failed', ackcmd=(ackcmd private_seqNum=1568846216, ack=<SalRetCode.CMD_FAILED: -302>,
  error=0, result='ERROR: Command OPENM1COVER rejected while M1 covers controller in StandbyState state.')

Post-Condition

This procedure leaves the telescope with the M1 cover open.

Procedure Steps

The recovery of the M1 cover control must be done from the ATMCS EUI.

1. Ensure the ATCS CSCs are all set to STANDBY

   The easiest way to do this is to run the standby_atcs.py script from the ATQueue. Do not proceed to the next step until the CSCs are set to STANDBY, otherwise you will need to reset both the CSC and EUI to regain communication.

2. Log in to the ATMCS EUI either using a remote desktop or from the control computer on the first floor of the AuxTel dome.

   More instruction can be found in the access ATMCS EUI procedure.

3. Close the ATMCS EUI tab

4. Engage E-stop in main AT Control Cabinet and ATDome Main Box located on the first floor.

5. Release E-stop starting with the ATDome Main Box followed by the AT Control Cabinet.

   Refer to release E-stop procedure for more details.

6. Open LSST Auxiliary Telescope MCS & Pneumatics EUI aka ATMCS in the web-browser.

   Address is http://139.229.170.47:8000/atmcs.html

   

   ATMCS EUI