Date: 2017 Nov 18 UT
Observers: Jon Brown, Patrick Vallely 
TO: David Gonzalez
SA: Dave T

Moon phase: 

Summary: Closed almost all night due to clouds/wind/humidity.
         Opened for a short while, tried some OSU_monitor
         targets, then did some twilight flats.

Minor technical issues: 

Completed Programs:


Calibrations: 

LBC: 
  Flats (r+I, Uspec+CN817)
  

MODS:
  grpixflat
  specflats
  grlamps
  imflats (r-band)
  N2403_F1
  N2403_F2


LUCI:
  UM_XMD specFlats and arcs
  UVa_WISE_Imaging imaging flats

Standard star: 


Details (All times UT):
----------------------------------

00:00 - Handover ect. Weather does not look promising.

02:00 - We're going to be closed for the foreseeable future
        due to some combination of wind, clouds, and humidity,
        so we're going to run some MODS and LUCI calibrations.

06:00 - Finished calibrations.
        
        A note about the LUCI imaging flats calibrations: 
        these were taken by hand and some of the LUCI1 flats
        were taken with a blind filter left in. It should be
        evident in the log file which ones should be avoided,
        and which ones were configured correctly.

10:30 - Looks like we might be able to give it a try. Going to
        attempt LBC, mainly to get some twilight flats in.

11:30 - Starting OSU_monitor/N2403
        Seeing is >1", but seems to have improved over the
        course of the observations.

11:40 - Moving to OSU_monitor/N2903
        Blue is having problems focusing, but the conditions
        aren't ideal, so this isn't a surprise. Given time
        constraints we're committed to this sequence of exposures;
        fortunately the red images look good.
12:25 - Red backgrounds getting pretty high but we're just 
        going to let it run.

13:00 - Should be able to start sky flats soon.
        Plan is r+I and then Uspec+CN817, possibly
        Uspec+TiO784.
13:25 - We paused the second set of U+CN flats to scale down
        the exposure times. Some clouds moved in at the end,
        but we might have missed them.
13:30 - We're going to try U+TiO but I suspect it is too bright.
        Suspicions confirmed. We're done for the night,
        CN flats will have to wait until next twilight.