MDM Observatory 2.4m Telescope Observer's Report for 2007 Mar 31

Observer(s): chris peters
Institution(s): dartmouth college

Instrument: echelle + modspec

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

Seeing and Weather:
   Beg: Clear, Winds Light & Variable
   Mid: Clear, Winds Moderate
   End: Patchy Clouds, Winds Light & Variable

Observing Summary:

Another night spent getting spectra of CVs for radial velocity 
timeseries. Great weather and the telescope worked like a dream.

Now for the bad news...
Beginning last night, the neon lamp was dying, evident from the 
comparison spectra. By the beginning of tonight, it was dead. 
This may make the wavelength calibration of the twilight 
spectra difficult (but won't affect the night spectra due to 
wavelength calibration by night-sky lines). However, the Xenon 
lamp may be sufficient to fill in the gap left by the 
missing Neon to get through these last 2 nights.

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Submitted on 2007 Apr 1 [6:04:53]