MDM Trouble Report for 2019 May 04

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

Problem(s) Encountered:
For the second night in a row a 30 minute exposure has been 
blank near the end of the night. The exposure does not look 
like it saw any light for the full 30 minutes, not even cosmic 
rays. A restart of prospero did not immediately seem to fix the 
problem however moving the filter seemed to help a bit. Both nights
this failure has occurred with the same filter setup when the 
telescope was at an hour angle of approximately -2 both times.

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Submitted on 2019 May 5 [4:42:49]