MDM Observatory 1.3m Telescope Observing Report for 2018 Aug 10

Observer(s): Clarkson, Fiolka, Vowell
Institution(s): UM-Dearborn

Instrument: Andor

Worked for 6 hours (all night)
Conditions were Non-Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Clouds from 2100 until 2200.
   Beg: Overcast, Winds Light & Variable
   Mid: Seeing 1.2 arcsec, Patchy Clouds, Winds Light & Variable
   End: Seeing 1.2 arcsec, Patchy Clouds, Winds Light & Variable

Observing Summary:

Opened at about 2200 after threatening clouds had moved on.
Got six hours on target, followed by morning twilight flats.

Noticed some vertical shake in the guider (about 1 arcsec); some
science images show some vertical blurring. This appeared to be
transient; guiding generally OK (RMS 0.5 X, 0.2 Y).
 
Unfamiliar TCS output on morning closing: both the Slit and
DropLeaf indicators show  rain  in red text, and on typing 
 tx droleaf close,  the TCS console returns the message 
 done dropleaf cantopen=rain . The 2.4m observer (JR) verified that 
the dropleaf was indeed closed; we closed the slit and the
dome seems to be closed up fine.

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Submitted on 2018 Aug 11 [6:16:15]