MDM Observatory 2.4m Telescope Observer's Report for 2004 Jun 21

Observer(s): Thorstensen
Institution(s): Dartmouth

Instrument: Modspec + echelle CCD

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

Seeing and Weather:
   Beg: Seeing 1+ arcsec, Cirrus, Winds Moderate
   Mid: Seeing 1+ arcsec, Clear, Winds Light & Variable
   End: Seeing 1+ arcsec, Clear, Winds Calm

Observing Summary:

A good night, spectroscopy of cataclysmic binaries and related
objects.   Some proto-monsoon stuff to the east and south
at sunset, but it stayed away mostly except for a brief interval
of high cloud early in the evening. 

One minor anomaly - when focusing over a large range,
the image appears to shift in a smooth linear fashion, e.g. by
maybe 5-10 arcsec in a travel of a couple hundred focus 
numbers.   I don't  remember this happening before.  Could this 
be related to the collimation?  

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Submitted on 2004 Jun 22 [5:05:52]