MDM Observatory 1.3m Telescope Observing Report for 2010 Jun 05

Observer(s): Schroeder
Institution(s): Columbia

Instrument: Nellie

Worked for 10 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 1 arcsec, Clear, Winds Calm
   Mid: Seeing 1 arcsec, Clear, Winds Calm
   End: Seeing 1 arcsec, Clear, Winds Calm

Observing Summary:

There is a problem with the dec drive that sounds like a banging oscillation when tracking or guiding.

It is most pronounced at HA = -4; dec=31:57:12

It seems to be the cause of the dec-oscillations I've been observing for the last few months.

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Submitted on 2010 Jun 6 [4:59:10]