The observing team at Gemini keeps a detailed log of each night's science observing, also noting weather issues, technical faults and any time spent in planned engineering. It is read by Gemini staff early each morning. A summary of the night is written at the end of observing and included at the top of each night log. That summary is posted here, unedited, to give interested users a feel for what we're doing.


Show nightlog summary for the night of:
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UT DATE NIGHT PLAN NIGHT SUMMARY
Apr 24, 2018 IGRINS queue observing run with GMOS and F2 backup from SBF. Started observing though variable clouds and got data for three IGRINS programs, however it was not possible to get light anymore shortly after midnight due to thick clouds.
Apr 23, 2018 IGRINS queue observing run with GMOS and F2 backup from SBF. The cloudiness conditioned the advance on the second IGRINS queue observing night after 3 am. We managed to observe six IGRINS program plus the active RToO with GMOS under IQ70 and CC70-Any conditions. No technical faults were reported.
Apr 22, 2018 First night of the IGRINS queue observing run with GMOS and F2 backup from SBF. A very productive first night of IGRINS queue observing. Eight programs plus calibrators were observed under CC50, IQ85/Any conditions all night. One fault was reported about science fold mirror.
Apr 21, 2018 Regular queue night with GMOS and F2 from SBF. An excellent night, clear sky and dominant good seeing ranging between IQ70-20% with some excursion into IQ85 at the end of the night. We were able to observe, using GMOS and F2, two band 1, three band 2, three band 3, and two band 4 programs. No weather loss nor technical faults were reported.
Apr 20, 2018 Regular queue with GMOS and F2 from SBF. A good night. We managed to observe one band 1, five band 2, and one band 3 under observing conditions CC50, IQ70. No technical faults were reported.
Apr 19, 2018 Regular queue with GMOS and F2 from SBF. F2 OIWFS ENT is scheduled. A productive night. We managed to observe, with GMOS and F2, three band 1, three band 2 (SToO included), one band 3, and one band 4 program under observing conditions IQ70/85, CC50. Also, we were able to run the F2 ENT. No technical faults reported.
Apr 18, 2018 Regular queue with GMOS and F2 from SBF. F2 OIWFS ENT is scheduled. Predominant bad seeing at the first half of the night plus high winds all the night coming from South direction prevented us to complete the ENT and observe southern targets. One band 1, two band 2, three band 3, and several band 4 programs were observed tonight. In spite of the weather, the second half of the night was very productive. One technical fault was reported.
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