Date: 2021 Jan 03 UTC
LBTO Observer: Olga Kuhn 
Observers: Mark Whittle (UVa), Rick Pogge (OSU)
TO: Steve Allanson
Special Assitant: Trim

All observing is remote in C-19 mode.

Moon phase:
   Waning gibbous, 80% illuminated, so bright time after 0400UT
   Twilight at 0153UT evening, 1255UT morning


Summary:
   Bright time run with LUCI1+2 binocular all night.  All MODS and LBC
   targets closer than 60-degrees from the bright moon.  Cloudy at
   sunset but mostly clear by twilight and appeared to stay clear all
   night.  Sky and closed-dome calibrations end of the night into morning.


Calibrations: 
   Sky flats for LUCI (program UVa_NIRjets)
   Spectral calibrations (flats, arcs) for UVa_NIRjets, UVa_BCD_LUCI
   deferring calibrations for ND_j0053IR to night 2, awaiting guidance from PG


Completed Programs: 
   UVa_NIRjets (imaging and long-slit)
   UVa_BCD_LUCI (3 targets)
   ND_j0053IR - problem with telescope ~1h lost, seeing poor, need guidance
                from Garnavich


Time Lost:
   Telescope: Hydrostatic Bearing System (HBS) bearing pad failure, 4
   times at the start of the night with ~1h downtime, 2 more time end
   of the night with ~40m downtime.

   LUCI: Small number of camera wheel and grating tilt faults on LUCI1
   LUCI grating tilt unable to settle at 87-deg elevation on both that
   caused loss of observation of a telluric star for one program.

   Total lost a little over 2h.


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

01:00 Opened enclosure, configured for LUCI

Target 1: ND_j0053ir

01:50 Doing telluric HIP6002 at end of twilight.
      Seeing ~1.4 and varying.
      
02:10 start exposure for J,H,K (completed – but missed the last K dither). 

02:25 bearing pad pressure failure for azimuth.  Lost preset, 5 min recover

02:30 go to target (ND_0053). 

02:30 started J (8x1min x 4dither).  About 1.2 arcsec, still variable.

02:56 hydrostatic azimuth bearing pad pressure failure again.

      On-site staff investigating

03:56 still trying to fix it...

04:15 LBT back in operation we’re allowed to get back to sky.
      Seeing much degraded (~2.3 and varying), and temperature warmed up
      from -4C to -1C, then back three times(!).

04:20 go to re-acquire the target [so downtime from 02:56 – 4:20 = 1:24]

04:51 start taking data (two persistence “blobs” from bright star
      acquisition are close to the spectral data).

Poor seeing so problems with LUCI2 WFS.  TO manually tweaking gains to
keep it from blowing up.

05:40 finish on ND_0053. Have ND (Peter) check data quality and advise
      on observing for tomorrow at start

UVa_BCD_J0817 - next LUCI target up, higher elevation

05:40 - slew to J0817, seeing improving, ~1" at end of acq

06:12 start taking data on target. Some ghosts visible from bright
      star from acquisition but not near the spectral trace.

      About 5 emission lines visible – all falling between sky lines.
      Seeing ~1.0 arcsec.

06:40 end science exposures and slew to telluric (which is rather far away?).

06:50 finished acquiring – but telluric is too close to zenith which
      causes the LUCI grating tilt mechanism to fail when the instrument
      is rotating rapidly.  Had to abort telluric

UVa_NIRjets - seeing improved, this target low elevation so a restricted
    observing window (dec -17)

06:55 - slew to IRAS07299-1651, start with imaging, decide if conditions
        warrant spectroscopy

07:00 - guide star not found, TO adjusted pointing, resent preset at 07:02
        guide star is very faint, checked to see if alternatives while
	starting K-band imaging observations, but not many choices.
	Seeing down to ~1", but variable.

07:25 - started narrow-band imaging (Br-gamma and H2).  seeing holding

07:52 - imaging done, conditions OK for spectroscopy

ND_NIRjetsLS program

07:52 - acquiring using Br-gamma filter, target is two close blobs but
        finder doesn't show which to use, so we put ~ at center of the
	two which seems to align with features further out in the finding
	chart.  PI should consult acq screenshots sent.

08:10 starting exposure. Seeing 1.2 arcsec. Moonlight falling on the telescope.

08:56 Switched grating positions. Continuing...  Worried we’re getting
      too low in elevation so starting to look for another telluric
      that’s about 1 hour later. Used Gemini list. Found one at HIP
      41463 B2 V. Seeing ~1.3 so increasing a bit due to low elevation.

09:34 finished spectra.   Slew to new telluric.

09:50 started spectra of telluric.

09:53 started second set of spectra.  Seeing ~1.1.

09:58 finished. 

UVa_BCD_0925

09:58 Slew to J0926. Faint, but visible.

10:28 Start integration. Seeing ~0.8. Five emission lines visible

11:05 finished. Slew to telluric (HD92573).

      OT not optimum for telluric acquisition: Use LUCI seeing limited
      (SL) library; downloadable from sciops webpages; choose telluric
      long slit. OT did not have an offset between exposures, but
      needs it. Fixed OT will be sent to PI fo reference.  Note for future
      use of this telluric guide star chosen is a double star.

11:20 start observing the telluric. 

11:30 finish exposures.  

UVa_BCD_1205

11:30 Slew to UVa_BCD_1205. Easy to see the object. Took a while to
      get the object centered in the slit.

11:54 start exposing on object.  Seeing ~1.0.  The He 10830 line is on
      a sky line as is the companion line slightly redward – may not
      be a reliable object. (z = 0.065 from SDSS). Seeing ~0.9 arcsec,
      Decided to repeat this script (because the emission lines are on
      sky lines and because there’s nothing else to do with the
      remaining 30 mins before twilight).

12:23 end of first set. Start again. Seeing getting better: 0.8 arcsec.  

12:50 Abort final exposure due to loss of pressure in the azimuth bearing. 

13:20 Tried to reacquire telluric (HD92573) but bearing pressure gone again.

Lost 37-min (12:50 – 13:27) to telescope bearing problem.  Seeing 0.9 arcsec.

13:27 Finally back on sky return to try the telluric – running out of time…

13:35 start exposing on telluric. 

LUCI Calibrations

13:40 K sky flats for NIRjets program, pointed to field Blank13+29
      ~2500 ADU at K.  Flats at K, BrG, H2

14:28 done

14:29 Dome closed and telescope parked.

Closed-Dome Calibrations:

      UVa_BCD_LUCI: flats, Ne, Ar, Xe comps
      UVa_nirjetsLS: flats, Ne, Ar, Xe comps (JHK, all grating settings)

Note: in common LUCI fashion, all images have title "Blank13+29" from
      the sky flats.  Check instrument config in archive for actual cals...