Date: 2021 June 15 UTC
LBTO Observer: O. Kuhn (LBTO)
Lead Partner Observer: J. Neustadt (OSU)
Other Partner Observers: R. Pogge & Patrick Vallely (OSU)
Telescope Operator: D. Gonzalez Huerta
Special Assistants: none(!)

Moon phase: 3d before first quarter, moonset at 2314 MST

Summary:

Heavy clouds and smoke haze at sunset.  Clouds got better but smoke
particle counts stayed above threshold (10 particles/ft^3) all night.
Obtained all MODS calibrations and most of the LUCI calibrations.

Calibrations: 
   MODS - dual grating pixflats, lamps, 1x1 and 1x2 binning
          slit flats for 0.6, 0.8, 1.0, and 1.2-arcsec long slits
	  OSU_IDF_MODS LL mask calibrations
	  Biases

   LUCI darks and biases for UVa LUCI programs

   LBC 25 biases on Blue and Red


Notes:
  first set of MODS dual grating pixflats were with chamber lights on.
  use the second set (images ~30-40)

  UVa_nirjets first set of darks while telescope was sleweing, using
  the set that followed starting at image 008