OSURC run
Second night:  January 31, 2017 UT
MODS and LBC

Observes: Terndrup, Stierwalt, Liss, Weins
Telops:  Gonzalez Huerta
Staff observer:   Kuhn

Clear at start of night.  Not photometric after midnight:  almost clear, but a bit of
structure towards the horizon in the N and W directions.

Late afternoon test exposures of Sieve Mask image number 1 in mods 1b, 1r, 2b, and 2r

UT 02:05:   Acquiring gl191b2b spectrophotometric standard.  Initial setup is taking longer than
usual because of a power glitch late in the afternoon.

Initial seeing is very good, about 0.5-0.6".

UT: 2:35.  Starting two sets of spectra of Gl191b2b

dual mode:
  mods1b.20170131.0001 through 0003  
  mods1r.20170131.0004 through 0006
  mods2b.20170131.0002 through 0004
  mods2r.20170131.0005 through 0007
  
red side:
  mods1r.20170131.0007 through 0009
  mods2r.20170131.0008 through 0010

UT 03:10  Acquiring UM_RMH star V12 in NGC 2403.  We have made a copy of the acquisition
and observing scripts to use a slit of width 0.6", since the seeing is so good.  Staring
to acquire with the 0.6" slit.

UT 03:25  Blind offset worked great.  Beginning observations.  Wavefront sensor FW = 0.63".
These are red side only with a narrow (0.6") slit.

  mods1r.20170131.0013 through 0017
  mods1r.20170131.0013 through 0017

We will get appropriate biases and flats on subsequent days of this run.

UT 05:15  Acquiring ND_carbon jy1926.  Seeing still very good (0.5 - 0.6").  Back to dual mode
for this object.

  mods1b.20170131.0005 through 0008
  mods1r.20170131.0021 through 0023
  mods2b.20170131.0005 through 0007
  mods2r.20170131.0021 through 0023
  
UT 06:00  Beginning switchover to LBC.
   06:40  Collimation and pointing.
   06:41  Start observing UVa_tntgroups program. 
   11:50  Finish UVa_tntgroups.

   seeing was about 1" - 1.1" for most of these observations.

UT 11:55  Moving to NGC 5194 in the OSU Monitor program
   12:09  Starting NGC 5194 science frames.  Blue seeing ~ 1", red ~ 0.85"

UT 12:53  Positioning for twilight flats (a bit early - but no time for another OB).

UT 12:55  Bias frames while we are waiting for the sunrise.

UT 13:30  Twilight frames in g(blue) and r(red) for UVA_tntgroups program. 
          First images are test exposures as the sky brightens.