Subject: Re: [sloan-25mlog 5220] 2.5m obslog 20201025 (SJD 59148)
From: John
Date: Mon, 26 Oct 2020 06:19:37 -0600
> Notes:
>
> 1. In the new MCP/TPM gui, counterweight 2 generally shows about half
>    the value of the other counterweights. At the counterweight chassis, they are
>    all the same, and they all appear to be at the same height on the telescope.
>
> 2. The process "tcw" is missing on the mcp computer.
>    Attempts to start or stop/start it fail, see Problems in Detail.
>    Sent email to Jeff Hagen.
The counterweight portion of the new GUI is waiting on a repair to the
old hardware that can be used to move them manually.  It was next on the
list until the power supply started acting up.  Now power supply
replacement will bump it again in priority.
>
> 3. The 90-deg ALT pin can be engaged only before stop buttons. If a stop button
>    applied first, it cannot be inserted. Removing the pin is possible, but it
>    take some more force that before.
This is a balance issue.  Hitting an e-stop sets the telescope brakes
only after a slight delay, during which the telescope can move
slightly.  If engaging the pin before an e-stop works, feel free to do
it, but sometimes it causes similar drifting due to delays (some of
which appear to be intentional).  The best practice, if you wish to
avoid the oddities, is to set the telescope brake using the MCP stop
button, then engage an e-stop. Hitting the e-stop on a live axis is
fine, in fact it could be called the best practice if we want to find
the oddities - not necessarily a bad thing.
>
> 4. Investigated the source of failing "Save Nominal MIGs" function in LUI.
>    Sent request to look at the m4l script to Jeff Hagen.
I think his plan was to store nominals in a file on the TPM machine, if
that is done the scripts may need to be modified to access it.  I don't
know with certainty, but I don't think fixing LUI was part of the
project.  I have the impression it has a lot of other problems.