MDM Trouble Report for 2019 Aug 27

Telescope: 2.4m
Observer(s): Fesen (Dartmouth)
Instrument: OSMOS/B

Problem(s) Encountered:
The problem of taking long-ish exposures that turn out looking 
like very short 10-20 second long exposures, like that happened
on the previous night, existed tonight too.

On a partially cloud night, like the last two nights, one might
think its due to clouds or cirrus. But by rebooting the IE
computer then restarting Prospero, the problem went away and the
resulting images look fine.

However, once things got working again, I found that any movement
of the telescope, say to another object, or even sometimes doing 
a small shift in position, would cause the problem to reappear.
Consequently, my the end of the night, I always rebooted IE and 
Prospero before starting a fresh set of exposures.
Note: It seems to have even failed while starting 
flats this morning.

Lost several hours tonight and much of the previous night to
this problem. 

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Submitted on 2019 Aug 28 [6:27:43]