Observers: G. De Rosa, S. J. Schmidt, D. Berg
Telescope Operator: G. Bechetti
Support Astronomer: M. Edwards

Instrument: LUCI-MODS

Summary: Dome closed due to humidity until UT9:45. Obtained LUCI calibrations (darks) while dome was 
closed. At UT 04:45, LUCI error: while switching the camera from N3.75 to N1.8 the camera wheel got 
stuck. Problem solved re-initializing. Dome opened at UT 09:45, instrument MODS. We have executed the 
following programs: OSU_RMAGN/PG0844, OSU_RMAGN/PG0953, Standard star feige34.

Weather: During the afternoon, humidity > 95%, thick low clouds forming locally (the system was not 
visible on satellite images). It was difficult to assess how the weather will evolve. Sunset: still 
thick layer of clouds overhead,  thick cirrus and clouds at the horizon, humidity ~85%. Difference 
between temperature and Dewpoint less than 2 deg, so it is not possible to open the dome. 3 deg 
difference between mirrors and outside temperature, no possibility of turning on ventors due to 
wind speed (10 m/s) so LBC observations were deemed impossible. UT 04:55, dome still closed: sky 
clearing up, humidity~90%. UT 07:16 humidity 99.9%. UT 09:30, humidity dropping, temperature 
difference mirror outside > 5 deg. UT 09:45 dome open: cirrus- hazzy. UT 12:00, humidity 40%.

UT 12:10 -- LUCI calibrations:
OSU_UCDz darks
UVa_MIRCluster darks
ND_ptf11kf darks
AZ_Lensimage darks

UT 04:45, LUCI error: while switching the camera from N3.75 to N1.8 the camera wheel got stuck. 
Problem solved re-initializing.

UT 04:51
OSU_Lensmass_darks_normal
OSU_Lensmass_darks_integrated
OSU_Lensmass_HKflat, wrong set, calibration unit was not in
OSU_BALQSO_He, OSU_BALQSO_IR_PC darks
UVa_BCD darks_normal
UVa_BCD darks_integrated
ND_SN11fe darks_integrated
ND_SN11fe darks_normal
AZ_z7uds darks

UT 09:45 Dome Open, instrument MODS
UT 10:00 MODS, pointing and collimation

OSU_RMAGN  
UT 10:10 -- PG0844:
UT 10:10 -- Telluric standard
1st exposure average seeing ~1.6”-1.7”
2nd exposure average seeing ~1.6”-1.7”
3rd exposure average seeing ~1.5-1.6”
UT 10:30 -- PG0844 pointing issues
1st exposure average seeing 1.3”-1.5”
2nd exposure average seeing 1.4”-1.5”
3rd exposure average seeing 1.5”-1.6”
4th exposure average seeing 1.5”-1.6”
UT 11:15 -- Pointing
UT 11:17 -- PG0953
moved DeltaX -0.26, take a second confirmation image
moved DeltaX 0.13, take a confirmation image
moved DeltaX -0.06
1st exposure, seeing ~1”
2nd exposure, seeing ~1”
3rd exposure, seeing ~1”
4th exposure, seeing ~1”

ND_COSLLS
UT 12:00 --  j0957
HA~-1, PA changed to 30 (as requested by the PI)
seeing >~1”, number of exposures increased to 3 (as requested by the PI)
1st exposure average seeing ~1.4-1.5
aborted during the second exposure because first exposure was faint and seeing continued to 
increase. We concluded we couldn’t get sufficiently good data to complete the target observations.

UT 12:25 -- Feige34
Dual Grating, Blue grating

UT 01:05 -- Dome closed.

MODS calibrations
bias8k.cal
bias3k.cal