Date: 2021 Mar 18 UTC
LBTO Observer: O. Kuhn
Lead Partner Observer: P. Vallely (OSU)
Other Partner Observers: R. Pogge (OSU)
Telescope Operator: David Gonzalez Huerta

Moon phase: 5d waxing crescent


Summary:

MODS all night, observing OSU_EELGs J0944, OSU_CLASSY J0808,
OSU_ASASSN ATLAS16dzp, and ND_uwcrb UW CrB.

Conditions were mostly clear with bands of cirrus, heavy at times, and
good to very good seeing especially in the later part of the night.

Opened late due to problems with the TCS GUIs reported by the
telescope operator, required help from downtown rebooting the TCS
computers, but was done before nautical twilight.

Calibrations: 

MODS flux standards Feige 34 and GD153


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

01:33 Sunset

01:56 The TCS problems have been resolved thanks to Yang and Stephen,
      and David is opening the chamber.

02:22 12-deg twilight

Flux Star Feige34 

02:49 acquisition - no star found on either side. Checked pointing.

02:51 18-deg twilight

03:03 re-acquire, much better

03:15 executing science script feige34_DualGrating.obs


OSU_EELGs/J0944

03:31 acquiring J0944_UT0400.acq, some clouds around


03:43 executing science script J0944.obs
      Seeing 0.8-0.9 arcsec, but clouds coming in just after start of the script
      Getting 2-3 mag of extinction during the data-taking

      This observation was pretty heavily affected by clouds. See the GCS plot for
      tonight 
  

OSU_CLASSY/J0808 filled RA hole

04:51 acquiring J0808.acq, still clouds around

05:06 executing science script J0808.obs
      seeing 0.5-0.7 arcsec, clouds during first exposure, then better


OSU_ASASSN/ATLAS16dzp

06:14 acquiring ATLAS16dzp.acq, average seeing ~0.6-arcsec, easy to acquire target.

06:28 executing science script ATLAS16dzp.obs
      Seeing 0.6-arcsec at start and some clouds around in guider record with dips ~1 mag during
      first half of the sequence, seeing went up to above >1 arcsec at times mid-sequence,
      clearly bands of clouds in and out


Flux Star HZ43

08:43 acquiring hz43.acq
      This star is very close to the zenith, ZD=3.8 deg and the wrong star was
      picked as a guide star on the DX side, ABORTED, going to another star.


Flux Star GD153

08:57 acquiring gd153.acq

      Collimation is taking a while on the left side since we came from a
      light elevation, retaking the images.

09:10 executing science script gd153.obs, seeing good 0.6"
	
09:16 - it looks like there are bands of cirrus coming over (all sky while on GD153)
  
ND_uwcrb/uwcrb

09:28 acquiring uwcrb_pa-60.acq
      The seeing is better than desired for this 0.8" program - during acquisition
      it was ~0.7-arcsec. Cirrus during acquisition.

09:50 executing science script uwcrb.obs, seeing 0.5-0.6-arcsec
      Clouds at start then only a few minor dips, best long clear run of the night

      A roughly 4-minute delay between m2r 44 & 45 due to a comm
      glitch (red expdone given to it it moving).  A "red expdone" was
      again needed between m2r 66 & 67.  And a "blue expdone" was
      needed after m2b 50, the very last mods2b, but we wanted it to
      start taking the subsequent exposure before aborting.

      One extra pair of mods2 blue and red images were taken to fill
      the time while mods1 was still finishing.

10:56 Jump in the DX guide star:
  
12:17 David is closing up.