MDM Trouble Report for 2013 Jun 07

Telescope: 2.4m
Observer(s): John Thorstensen (Dartmouth)
Instrument: modspec + templeton

Problem(s) Encountered:
I went to rotate to +70 and the rotator started giving readings 
in the hundreds of degrees -- this is a known, but mysterious,
bug.  I cleared it by rotating back to zero, then going back,
but then the rotator stopped at about 35 degrees, as if it had
hit a limit; I cured that by going back to the zenith (I'd been
a ways to thewest) and rotating, and it took.  

At one point I was focusing after a long move and noticed a 
slight distorion of the stars; each hard point was holding
about 60 lb.   This cleared in a few minutes.  

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Submitted on 2013 Jun 8 [5:20:38]