Date: 2016 Nov 18 UT
Observers: M Fausnaugh, S Johnson
TO:  Steve A.
SA:  Olga K.

Moon phase: 4.5 days after full.

Summary: Clear night with excellent seeing (sub-arcsecond) and
photometric conditions.  Began with LBC for ~1.5 hours, reconfigured
for MODS, and ended with LBC for last ~1.5 hours.

Minor technical issues: 
---obs4 remote agent started to freeze toward the end of night, lost
~15 minutes while focusing LBC.
---Strange call in MODS calib script took 90 8kx3k biases to be
written (no loss of time).  We don't know why it took these, didn't
see it happening because we were observing with LBC)
---Smudge visible R-BESSEL filter in evening twilights and
   observations.


Completed Programs: OSU_DES/highz1, 
	  	    ND_nova, 
		    OSU_ASASSN:15t,CSS1010v
		    OSU_Monitor: N6503, N6946, N925, N3627

Attempted OSU_Monitor/N3689, but close to moon and backgrounds were very
high---halved exposure times and ran script twice.


Calibrations: 

LBC:  Uspec, B, V, and R skyflats.

MODS: Biases, pixel flats, slit flats, arcs, imaging biases and r-band
flats.  Slit flats and imaging calibs taken in morning.

***mods2r naming is especially confusing:***
mods2r.20161119.0001 -- mods2r.20161119.015:  Calibs
mods2r.20161119.0016 -- mods2r.20161119.0101: junk biases
mods2r.20161119.0102 -- mods2r.20161119.0138:  Science images
mods2r.20161119.0138 -- mods2r.20161119.0138:  Calibs


Standard star:  gd71


Details (All times UT):
----------------------------------
Plan: Start with LBC for early OSU_monitor targets, switch to
 Binocular MODS.

23:25 -- (11/18) Running MODS calibration scripts, powering on LBC
      	 Running LBC biases

00:33 -- Opening, halted MODS calibrations (need slit flats and imaging cals)
      	 clear skies (likely photometric)
00:40 -- Running sky flats (blue: U-spec, B, V; red: R)
      	 Uspec ~15k--25k (5 images)
	 B     ~12k --20k (5 images) 
	 V     ~12k --20k (5images) 
	 R     ~12k--35k (15 images)
	 strange pupil image on LBCred---LBTO is investigating
	 smudge is confined to R-Bessell---secondary mirror is
	 blocking LBCred---as we only have 3 LBC targets, we will not
	 reconfigure to look inside.  Hoping the flat field removes
	 the issue from the science obs.
	 
1:22 -- Focusing/collimating N6503
1:37 -- Observing N6503 (elevation 38 degrees)
     	seeing ~1.2 arcseconds (r-band science)
	smudge is visible in R-bessell image

1:50 -- Focusing N6946
2:02 -- Observing N6946
     	seeing ~0.74 arcseconds (r-band science)

02:38 -- Focusing N925
02:44 -- Observing N925
      	 seeing ~0.9 arcseconds (r-band science)

03:09 -- Reconfiguring for MODS 
      	 ********************************************************
      	 glitch from calib script caused mods2red red to continue
      	 reading out images.  Science begins at
      	 mods2r.20161119.0102.fits
	 ********************************************************
03:26 -- Pointing MODS

03:37 -- Acquiring OSU_DES/highz1
03:50 -- Observing OSU_DES/highz1
      	 seeing ~0.7 arcseconds
	 RA DEC from TCS matches perfectly
	 sky clear, conditions photometric
	 exp2:  conditions remain clear
      	 seeing ~0.9 arcseconds
04:55 -- moonrise
	 exp3:  conditions remain clear
      	 seeing ~1.0 arcseconds
	 exp4:  conditions remain clear
      	 seeing ~1.1 arcseconds

06:01 -- acquiring ND_nova
      	 used no_nova script, since no alert was given
06:15 -- observing ND_nova
      	 seeing ~0.9 arcseconds

07:27 -- acquiring ASASSN15tv
07:43 -- observing ASASSN15tv
      	 seeing ~ 0.6 arcseconds
	 clear, photometric conditions

08:30 -- acquiring OSU_ASASS/CSS1010
08:51 -- observing OSU_ASASS/CSS1010
      	 We do not see the transient, are trusting the updated
      	 PosAngle sent by the PI this morning
      	 seeing ~ 1.3 arcseconds
	 exp 3:  seeing steady at ~0.9 arcseconds
	 mods1b.20161119.0041.fits:  world record for longest cosmic ray trail
	 
10:21 -- acquiring gd71
10:27 -- observing gd71
      	 seeing ~ 0.8 arcseconds
10:35 -- mods2 imcslock time out.  Did 'retry', exposure started, but then
      	 it through an error: 'IMCSLOCK disallowed during exposure'
	 will allow exposures to finish, then abort

10:48 -- reconfiguring for LBC

11:05 -- focusing/collimating N3489
      	 11:22 -- obs4 may be freezing, or possibly NM client---rerunning
	 dohybrid from obs3
11:29 -- observing N3489
      	 moon angle 38 degrees, background is 30k (R), 15K (B,)
	 halving exptime after image 4
      	 seeing ~ 0.8 arcseconds (red science image)
11:59 -- rerunning OB (at least partial) because of decreased exptime
      	 stopped after 3 B, 2 Uspec, and 5 R

12:11 -- focusing N3627
12:17 -- observing N3627
      	 moon angle 42 degrees, 10k B, 20K R, doing full exptime
	 seeing ~0.9 arcseconds (red science image)
12:34 -- 18 degree twilight

12:55 -- closing up

13:11 -- rerunning mods calibs