Observers: G. De Rosa, S. J. Schmidt Telescope Operator: S. Allenson Support Astronomer: O. Kuhn Instrument: MODS(cal) - LUCI - LBC(cal) Summary: We took MODS and LUCI calibrations during the afternoon. We opened the dome at UT 00:16 and obtained LUCI skyflats in J-H-Ks bands. At UT 00:57 we had a technical issue with the AGW camera, recovered by UT 01:23. We started the night with the AZ_LBG/J0143 program. At UT 03:20, after 1.5h exposure time, we slewed to the telluric standard (as requested by the PI) but encountered a LUCI filter wheel issue. The problem was solved by UT 04:09. We stayed on this program until UT 04:14 (total of 3.5 h on target out of 4.5h requested, without counting overheads). We then observed OSU_Lensmass/HE0345, UVa_BCD/J0519, OSU_BALQSO_He/SDSS0853 (second half of the program) and LBTB_LSSMAssive (total of 1.6 h on target out of 2h requested, without counting overheads) . While taking the second set of exposures for LBTB_LSSMAssive we had an additional issue with the AGW unit. We took LBC skyflats in g’-I-R bands and closed the dome at UT 13:37. During the morning: LUCI darks and LBC bias. Weather: Patchy clouds in the afternoon. At sunset: clear, light wind (2 m/s), T~1C, humidity ~40-60%. Conditions were stable all night. Bright time. During the afternoon: MODS slit flats (0.6"-0.8" slit) bias8k.cal LUCI flush detector INAF_Hunt_8AB/grbhost_HKarc.script AZ_LGB/J0123+0026_arcs.txt lamp_j2240.cal INAF_Hunt_8AB/grbhost_zJarc.script LBT_LSSMassive/cos14_1as.flat (1" slit) -- first attempt max counts ~340000, reduced DIT to 4s, run the script again LBT_LSSMassive/cos14.arc LBT_LSSMassive/cos14_1as.arc (1" slit) AZ_LGB/J0143-0049_arcs.txt (errors in the scripts: flexure compensation off/central wavelength) spec-flat_Jband.cal (Jochen Heidt) UT 00:04 -- Flushing LUCI detector UT 00:16 -- Dome open UT 00:26 -- LUCI skyflats Ks: good frames 122-127 (max counts ~ 9000) H: good frames 128-132 (max counts ~10000-9000), 142-146 (max counts ~9000-6000) J: good frames 133 - 141 (max counts ~14000-9000) UT 00:57 -- AGW failure UT 01:23 -- problem solved -- collimating AZ_LBG/j0143 UT 01:27 -- science acquisition -- target close to the moon (~28deg) bright guiding star -- some vignetting in the shell but no collimation issues UT 01:41 -- science exposure -- optical average seeing from guider 0.9" UT 02:00 -- collimation issues: guiding star close to the edge of the patrol field. No other bright star in the field, and the moon is too close to move to a fainter star. UT 02:25 -- optical average seeing from guider 0.8"-0.9" no trace is visible in the subtracted images, but sky is not well subtracted since 1 image is DIT=200xNDIT=3 UT 02:25 -- optical average seeing from guider 0.9" UT 02:50 -- faint trace detected in differential image -- optical average seeing from guider 0.8"-0.9" UT 03:05 -- optical average seeing from guider 0.7" UT 03:20 -- Telluric acquisition -- problems with the acquisition script: mask ID incorrect -- DIT=2 s (changed to minimum allowed: 4s) UT 03:21 -- Filter wheel error; wouldn't re-initialize, caused camera wheel error -- go to zenith UT 03:41 -- need to restart the software UT 04:00 -- problems solved -- slew to telluric UT 04:09 -- Telluric exposure -- optical average seeing from guider 1.2" requested DIT=4 NDIT=30, but the star is really bright (8.5 mag). Because of queuing issues we have changed the exposure time to DIT=4 NDIT=7. UT 04:14 -- Science acquisition UT 04:24 -- Science exposure -- optical average seeing from guider 0.7" -- better collimation than previous exposure. UT 04:46 -- optical average seeing from guider 0.7"-0.8" UT 05:10 -- optical average seeing from guider 0.7"-0.8" UT 05:34 -- optical average seeing from guider 0.7"-0.8" UT 05:45 -- optical average seeing from guider 0.8"-0.9" UT 06:04 -- science exposure -- optical average seeing from guider 0.9" we will spend 30 more min on this object -- the source has been shifted back to the origin UT 06:40 -- optical average seeing from guider varying between 1.3"-15" (??) UT 06:37 -- Telluric acquisition -- collimation issues (telluric very close to the moon) UT 06:46 -- Telluric exposure -- optical average seeing from guider 1.1" NOTE: since we managed to execute only part of the program, we do not know how to account for it. OSU_Lensmass/HE0435 UT 06:52 -- science acquisition -- Take a shifted image to obtain sky-subtracted field very narrow slit, take an additional image without mask in to confirm target position Vignetting (guiding star at the edge of the field patrol) UT 07:12 -- science exposure -- HK -- optical average seeing from guider ~1.2"-1.4" UT 07:17 -- optical average seeing from guider ~1."-1.1" UT 07:21 -- optical average seeing from guider ~0.9" -- optical average seeing from DIMM ~1.1" UT 07:22 -- science exposure -- J -- optical average seeing from guider ~0.9" UT 07:32 -- optical average seeing from guider ~1.1" UT 07:40 -- optical average seeing from guider varying ~0.9"-1.2" UT 07:47 -- optical average seeing from guider varying ~1.3"-1.5" UT 07:54 -- Telluric acquisition -- shifted the object up to avoid persistence UT 08:02 -- Telluric exposure -- J -- optical average seeing from guider ~1.5" -- exposure time changed DIT 4 NDIT 7 -- run again save mode was normal, run again in integrated mode UT 08:09 -- Telluric exposure -- HK -- optical average seeing from guider ~1.3"-1.5" UVa_BCD/j0519 UT 08:14 -- science acquisition UT 08:29 -- science exposure -- optical average seeing from guider ~1."-1.1" UT 08:41 -- optical average seeing from guider ~0.9"-1." Trace visible in differential image (faint continuum, bright emission line) UT 08:51 -- Telluric acquisition UT 08:59 -- Telluric exposure -- optical average seeing from guider ~1.1" OSU_BALQSO_He/SDSS0853 Only one standard, due to queueing issues. UT 09:03 -- Telluric acquisition -- failed UT 09:06 -- pointing check UT 09:07 -- Telluric acquisition UT 09:15 -- Telluric exposure -- optical average seeing from guider ~0.8"-0.9" UT 09:19 -- Science Acquisition UT 09:28 -- Science exposure -- optical average seeing from guider ~0.8"-0.9" UT 09:38 -- optical average seeing from guider ~0.8" UT 09:58 -- optical average seeing from guider ~1.2"-1.3" LBTB_LSSMassive/ UT 10:15 -- science acquisition -- Vignetting but no collimation issues Offset star placed ~1 arcmin from the bottom of the slit as requested by the PI Faint star, difficult to center it on slit UT 10:35 -- science exposure -- optical average seeing from guider ~0.8" UT 10:54 -- optical average seeing from guider ~0.7"-0.8" UT 11:10 -- optical average seeing from guider ~0.7"-0.8" UT 11:10 -- optical average seeing from guider ~0.7" UT 11:22 -- visible traces in differential images UT 11:46 -- Start second science exposure -- optical average seeing from guider ~0.7" UT 11:56 -- AGW technical issue (2 exposures finished) UT 11:59 -- problem solved- science acquisition UT 12:11 -- science exposure -- optical average seeing from guider ~0.8" UT 12:46 -- aborting sequence (6 exposures done) UT 12:47 -- Telluric acquisition UT 12:54 -- Telluric Exposure -- optical average seeing from guider ~0.8" NOTE: since we managed to execute only part of the program, we do not know how to account for it. UT 12:58 -- Switch to LBC for skyflats In the meanwhile: flushing LUCI detector and taking LBC biases SKYFLATS: 7 good frames in R-Bessel 5 good frames in I-Bessel 7 good frames in g-sdss UT 13:37 -- Dome closed LUCI darks LBC bias