MDM Observatory 1.3m Telescope Observer's Report for 2001 Feb 20

Observer(s): Lepine, Zurek
Institution(s): Columbia

Instrument: MkIII spectrograph

Worked for 11 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the summary for details.

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

Observing Summary:

We observed what appears to be a chromatic aberration in the
spectrograph configuration. We focussed the telescope using 
the method described in the manual. While our stars were well 
focussed in the 5000-7000A spectral range (and on the guider
camera), spectra showed stars to be significantly out-of-focus
in the 7000-8000A spectral range.


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Submitted on 2001 Feb 21 [6:59:23]