MDM Trouble Report for 2007 Jun 1

Telescope: 2.4m
Observer(s): Sivakoff (The Ohio State University)
Instrument: Echelle

Problem(s) Encountered:
Ambient Dome Temperature Malfunctioned Twice:
The first time was only seen in retrospect.
The second time, I noticed a mirror close warning on
the A/C monitor to a Dewpoint Warning. I closed the mirrors
immediately. Review of the A/C history showed Ambient Dome
Temperatures off the chart (this was when the first case was
noticed). Since the MDM weather station, as well as several
online forecasts, showed a more correct temperature and
a low dewpoint, I ignored the warning and opened the mirror.

At some point, the temperature sensor began operating normally
by itself.
Impact: 15 min

1 Software Error on Readout:
Reading out a twilight flat, I got the following error message.
 Beginning CCD read of 2080 by 2048 (4259840 pixels)...
ccd_aread: wrong aio finished; expected 2.  This is bad.
*** Error encountered in asynchronous read: data suspect
Failed, return code = 1507328, elapsed = 44.152000 
I tried clearing the CCD, but got
 *** Problem clearing CCD, Camera not responding. 
After a few tries, the camera began to respond again by itself.
Impact: 5 min

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Submitted on 2007 Jun 1 [5:45:40]