Night Report 2019-07-23

Observers:

Phil Wiseman, Charlotte Angus 

Support Team: 

Lizi Swann, Mat Smith

TAT: 

Claudia Gutierrez, Michel Dennefeld, Maria Teresa Botticella

Calibrations:

EFOSC2: Morning: Arcs, dome flats, bias

Additional flats & arcs for M. Dennefeld.

Weather:

Sunset: 22:13 UT, Twilight (end): 23.28 UT

Morning Twilight (start): 10.09 UT

Beginning of night:  Cloud, humidity 90%, wind speeds ~10m/s.  Temp ~-3 deg

Middle of night:  Clear, humidity 63% and dropping, wind speeds between 5-10 m/s. Temp ~0 deg

End of night:  Beautifully clear, wind speeds 8m/s, temp~ 2 deg

Comments:

Dome closed all night due to ice.