MDM Observatory 2.4m Telescope Observing Report for 2015 Jun 20

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

Instrument: Modspec/Echelle

Worked for 8.5 hours (all night)
Conditions were Non-Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.5 arcsec, Cirrus, Winds Moderate
   Mid: Seeing 2.0 arcsec, Clear, Winds Moderate
   End: Seeing 2.4 arcsec, Clear, Winds Moderate

Observing Summary:

The night started with a rapid rise in humidity.
After midnight, the wind direction changed and the
seeing became terrible.  Fortunately I had discovered
a bright object to work on for such a night (no, not V404 Cyg).

A thin strip of wood stapled to the screening broke off.
Others are getting loose.

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Submitted on 2015 Jun 21 [4:34:21]