MDM Observatory 1.3m Telescope Observer's Report for 2006 Apr 28

Observer(s): Jules Halpern
Institution(s): Columbia

Instrument: Templeton Direct

Worked for 9 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 2.6 arcsec, Clear, Winds Light & Variable
   Mid: Seeing 2.0 arcsec, Clear, Winds Light & Variable
   End: Seeing 1.4 arcsec, Clear, Winds Light & Variable

Observing Summary:

The seeing was bad and the humidity rose, but never above 75%.
Then both decreased, and the end of the night was the best.

Experienced one asynchronous read error:

064> go
Clearing the CCD.... Done, cleared CCD 1 time
Getting TCS/MIS info...done
Exposure Started, Ctrl+C to pause
Exposure Complete, Elapsed Time = 600.05 sec       
Beginning CCD read of 1106 by 1024 (1132544 pixels)...
ccd_aread: wrong aio finished; expected 0.  This is bad.
*** Error encountered in asynchronous read: data suspect
Failed, return code = 0, elapsed = 0.922000

064> wf
Writing FITS file 1106 by 1024 'GRB 060428B' to ccd.064.fits... done.

When I then wrote the file using 'wf', hoping to get something
useful, I recovered a basically correct image that had been
contaminated with a diagonal pattern of dots every few pixels.

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

Submitted on 2006 Apr 29 [5:35:46]