MDM Observatory 1.3m Telescope Observer's Report for 2005 Nov 03

Observer(s): Martin Bureau , Anne-Marie Weijmans
Institution(s): Oxford University, Leiden Univ.

Instrument: Direct Imaging, f/7.6, echelle

Worked for 12:30 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.7 arcsec, Cirrus, Winds Calm
   Mid: Seeing 1.6 arcsec, Clear, Winds Calm
   End: Seeing 1.5 arcsec, Clear, Winds Calm

Observing Summary:

Continuation of an optical imaging follow-up of the Sauron survey of
early-type galaxies. The sky was partially cloudy with scattered
cirrus and erratic seeing (1.3-3.5 ) for the first quarter of the
night, when we obtained some long exposures. Fortunately, the clouds
cleared rapidly and the last three-quarters of the night were (as far
as we could tell) perfectly photometric, with seeing typically
1.5-2.0 . We then succeeded to obtain all the photometric data we
needed (galaxies and standards) in the Fall, the main aim of this
observing run. So this run is already a success!!!

We had no technical problem. Most importantly, the bias level problem
experienced yesterday did not occur at all.

------------------------------

Submitted on 2005 Nov 4 [7:50:06]