MDM Observatory 2.4m Telescope Observing Report for 2020 Feb 27

Observer(s): Wei Sun
Institution(s): University of Michigan

Instrument: OSMOS

Worked for 16 hours (all night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Clouds all night.
   Beg: Overcast, Winds Calm
   Mid: Overcast, Winds Calm
   End: Overcast, Winds Calm

Observing Summary:

The major problem I have encountered during the night is the  Prospero  system crash at around 21:30.
It happened during the  movie  mode that I was intend to check the telescope focusing. The capturing of
figures stopped when I was changing the readout mode (rroi2k to rroi1k) during movie mode.

To solve this problem, I reboot Prospero at first, which was still stuck at the movie mode. Then I rebooted
the IC PC, and tried Eric's suggestion of commanding  seqinit  on raritan. The  seqinit  failed because of
UART, and in the rebooted Prospero Status window, the flags of IC shows  -SEQ .

Then I followed the reset procedure described in

http://mdm.kpno.noao.edu/double-files.html

to reboot both the IC PC and Caliban. The Caliban made a lot of noise in next 20 mins after rebooting.
The prospero worked by then.


Besides that, the cloudy weather limits our astronomical observation of the whole night. Only two or
three several tens of minutes windows happened during the whole night.

The program adjusting the guider focus seems does not work. The guider star image seems no change
when I was holding the in or out button for at least 30 seconds.

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Submitted on 2020 Feb 28 [8:20:08]
NOTE: This report replaces the previous 2.4m telescope
      observing report for 2020 Feb 27