Date: 2018 May 21 (UT)
Observers: Brown, Vallely
TO: Geno Bechetti
SA: Olga Kuhn (on call)

Moon phase: 

Summary: First half of the night was productive, but the end was not
         so much. Weather moved it and the last couple targets were
         probably a wash.

Minor technical issues: MODS1b filter wheel gear is having problems, so
                        we need to stick to programs/scripts that only
                        use the clear filter. Most of the general 
                        calibrations (i.e. pixflats, arcs, slitflats) had 
                        been done before the failure; UM_M83 MOS calibrations 
                        were interrupted by the failure (yesterday), while the
                        0.6" slitflats and the imaging flats have not
                        been done. 

Calibrations: MODSPhotCal/gd153
              MODSPhotCal/bd284211

Completed Programs: 

    MODS: OSU_ASASSN/PS18kh
          UM_M83/M83_F1
          ND_carbon/CVn1


Details (All times UT):
----------------------------------
Plan: Plan is MODS all night. MODS1b filter wheel is having issues,
      so we can't use anything other than the clear filter. This
      generally shouldn't be a problem, but likely means the 
      0.6" slitflats, the UM_M83 MOS calibrations, and imaging flats 
      won't be doable until the filter wheel is fixed.

02:00 - sunset

03:00 - Done focus and collimation. Seeing looks good (0.6"), going
        to send preset to PS18kh.

03:20 - Starting exposure right at the end of twilight.
        Seeing is ~0.7", slightly worse this low in the sky.
        We're 20deg from the moon, Vmoon~19. Seeing/WFS is
        getting pretty crummy as we approach airmass~2.

04:30 - Going to try UM_M83 while we have the looser elevation
        limit. Conditions may deteriorate slightly; some thin
        cirrus visible on the all-sky.

04:45 - Starting UM_M83/M83_F1.
        Conditions have been reasonably ok. There's some thin
        cirrus and we're very low in the sky; seeing is ~1.1",
        but much better near zenith.

05:50 - Moving to standard star gd153.
        Thin cirrus, seeing is ~0.7" now that we're out of the trees.

06:30 - Starting ND_carbon/CVn1.obs.
        Conditions looking quite good, but some clouds are quickly
        making their way toward us.

07:00 - Clouds are about to start moving in, seeing has blown up to
        ~1.3".
08:00 - Nothing too bad as moved in, seeing hovering around 1".
        Winds are creeping up there.
        Seeing <1" for last exposure or so.

08:40 - Moving to AT2017gxq
09:10 - Started AT2017gxq.
        Had some issues with the acquisition. There was an error
        with instconfig being in progress, command not allowed.
        We tried a few things, but the issue persisted. We called
        Olga, ran the acq script one block at a time, and it seemed
        to work. There are some thin clouds and the wind might
        become problematic.
09:50 - Guiding in and out with some clouds. Rest of the night not
        looking not very good. The trace in the 2D spectrum is
        barely visible.
10:20 - An attempt was made, but the data don't look promising.
        We're going to do a standard and try 18jd again, if
        the wind doesn't close us. Have to unwind and resend
        the preset etc.

10:45 - Standard star bd224811.
10:50 - Standard bd284211 is done, going to try to get collimated
        near ASASSN18jd in case the clouds prove to be thin.
11:20 - We weren't able to get collimated on the left, weather
        and twilight were not helping. Probably not going to happen.