Date: 2020 Oct 10 UTC
Observers: Kuhn, Garnavich (lead), Pogge, Wood
TO: Steve Allanson
SA: Mrs. Chippy, Bentley, Trim

All observers and SAs working remotely from their respective homes.

Moon phase: gray (last quarter)

Summary:
   MODS then LUCI. Clear all night with good seeing, mostly
   sub-arcsec with puffs to 1+arcsec, episodes of ~0.6 arcesc.
   Continuing with dark programs before moonrise, then 
   moonlight-tolerant programs after with MODS/LUCI.

Calibrations: 
  LUCI sky flats end of the night, plus remaining closed-dome cals
  MODS calibrations (pixflats, slitflats, comps) end of the night


Executed Programs: 
  OSU_ASASSN ASASSN20hx
  OSU_Lithium BrownDwarf1 (2MASS J00302476+2244492)
  ND_j0053 - binocular staggered time series premier
  UVa_Eris
  UVa_nirjets AFGL5180 imaging (following last-night's long-slit)
  ND_origin G77-61


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

01:00 - opened up, configured for binocular MODS, LUCI warmed up and on standby
 
01:24 - MODS Flux Star BD+284211 while still bright before twilight
 
01:30 - collimating ~0.8arcsec seeing
 
01:45 - doing red-only standard MODS script 

01:52 - dual MODS standard  seeing MODS1 ~0.8" MODS2 ~0.65"
 
02:10 - OSU_ASASSN - ASASSN20hx 
 
02:20 - slit acq. wavefront on MODS1 is elongated (atmospheric dispersion?)
 
02:50 - seeing up to 1.0"
 
03:30 - final readout for ASASSN20hx seeing ~1.0arcsec
        
 
03:33 - OSU_Lithium, BrownDwarf1 (2MASS J00302476+2244492)
 
03:45 - starting integration 0.7arsec seeing. 4x1800s exposures
        This runs for nearly 2 hours... Seeing started 0.7, up to
        0.9 at times during exp 2, 0.6 at start of exp3, steady at
        0.6-0.7 during exp4.  (4x1800s)

 
05:58 - ND_j0053 - long spectral time series (~2 hours)
 
 For this target we are using modified .obs scripts for MODS1 and MODS2
 that staggers the start of the time sequence by delaying the start of
 MODS2 dgo by ~1/2 the exposure time so that MODS2 is always observing
 while MODS1 is closed-shutter for readout/setup.  This gives the time
 series twice the effective cadence and zero deadtime.
 
06:10 - acq and taking data. MODS1+2 blue staggered by 1/2 exposure time
        right side worse image quality than left (cooling difference?)
 
07:05 - mirrors evened out at 0.7arcsec. Moonrise
 
07:50 - temperature dropped and seeing up to 1.2arcsec on right side

08:08 - Done with Binocular MODS.  Staggered MODS1/2 worked well.
 
========================================================================
Binocular LUCI

08:10 - Reconfiguring for LUCIs
 
08:35 - UVa_Eris
        Mask error on LUCI2, had to call Dave T for help. The strain
        gauges were on and the preconditions for move-to-turnout were
        violated.
 
08:44 - Recovered from fault, starting acq
 
08:52 - A0V Telluric star for Eris (HD13935)
 
08:57 - Slewing to Eris in non-sidereal mode
        Doing acqusition in J instead of K like last night, much easier to see
        the target.

09:15 - Starting set of spectra

09:30 - seeing ~0.7arcsec

10:00 - started rep2 on Eris. Seeing ~0.8-arcsec

10:50 - Tellurc star for Eris (HD13935)

11:08 - UVa_nirjets AGFL5180 imaging

11:10 - seeing ~0.65arcsec

11:15 - left side guide probe jumped...had to restart

11:21 - restarted scripts

11:58 - done


11:59 - ND_origin, target G77-61 - short observation moving into astronomical twilight
 
12:01 - Telluric star HIP13917 for G77-61
12:16 - finishing telluric, another guide star lost on left side...but telluric ok

12:18 - slewing to G77-61

12:29 - starting spectroscopy

12:40 - Done. Doing sky flats

12:55 - K sky flats

13:09 - BrG and H2 sky flats

13:30 - done.

13:35 - Steve closing up

*** End of Night Calibrations:

13:38 - starting closed-dome LUCI & MODS calibrations