MDM Observatory 2.4m Telescope Observing Report for 2013 Mar 17

Observer(s): Marat Musin, Jacob Brown
Institution(s): University of Missouri

Instrument: OSMOS+R4k

Worked for 11 hours (all night)
Conditions were Mixed most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Clouds from 6 until 7.
   Beg: Seeing 1.3 arcsec, Cirrus, Winds Calm
   Mid: Seeing 1.5 arcsec, Clear, Winds Calm
   End: Seeing 2.1 arcsec, Clear, Winds Calm

Observing Summary:

Pointing went really bad.
We had to do re-pointing every 5-7 exposures (for the same object).
It influences our guiding - we were unable to locate the stars that
we saw in the JSkycalc on the GUIDER display. One time the guiding
star was going counter-clockwise in the Autoguider Image window 
with period ~2-3 minutes per rotation.

The message  Moving With Autodome OFF  was on the TCS screen 
for the last half of the night, but we kept on working since
the Dome Error was within 1-2 degrees.

For the third night we observe strange smearing at the edges 
of the images when we do twilight flat. It appears for ADU>35000



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Submitted on 2013 Mar 18 [6:58:26]