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:

Nov 30, 2017 First night of Phoenix Run with a GMOS queue. Forecast is expected to be clear sky, low winds, and average seeing IQ70/85. Night plagued by faults throughout first half of the night, in spite of that, we managed to observe an active SToO, then ran the on-sky instrument checks for Phoenix and executed one Phoenix target under CC50 & IQ70 until the end of the night.
Nov 29, 2017 Second night of the GPIES campaign run with a GMOS queue. Forecast is clear sky, low winds, and average seeing IQ70/85. In spite of the variable seeing, we were able to observe six GPI, and three GMOS B4 targets under clear sky. Two technical faults caused a lot of inconvenience in the observer side but without impact to the night time operations.
Nov 28, 2017 GPIES campaign run with a GMOS queue. The night is forecasted to be clear, low winds, and seeing IQ70/85 is expected. Very productive night, the GPI remote observers were able to observe eleven targets. Seeing mostly stayed in IQ70 range with some excursions to IQ85/Any, overall a good night. No technical faults reported.
Nov 27, 2017 The night is again forecast to be clear and calm. Expected seeing is IQ 70/85. The GPI team have an hour of observations, and will attempt to finish tonight. GPI and GMOS will be used for queue backup. The night crew arrived to SBF to find clear and calm conditions on the summit. We opened early for cooling and slewed to a tuning field. Seeing mostly stayed in IQ 70. The GPI remote observers finished their observations, and we observed an RToO and SToO.
Nov 26, 2017 The night is forecast to be clear and calm, seeing IQ 70/85. The GPI team will try again towards the middle of the night, and GMOS and GPI are available for queue backup. The night crew arrived to SBF to find clear conditions on the summit. Almost no winds, 40% RH. Night was full of very good conditions. IQ20/70 all night. No problems. GPI team almost finished with their observations.
Nov 24, 2017 the last night of Korean run. Since the Korean programs already have been completed, we plan to execute normal Gemini queue. Forecast: Clear sky with CC50, IQ70/85, and low wind. CC70/CC80 & IQ70/85 throughout the night. IQ70 and CC70 in the first half and IQ70/85 and CC80 in the second half due to the cirrus. One program with timing window (S17B-Q-24) and another ToO program (S17B-LP-10) have been executed.
Nov 23, 2017 fourth night of Korean block. Forecast: clear sky with CC50, IQ70-85, low wind speed. Plan to execute 2 remaining Korean programs (2017B-Q-18 and 2017B-Q-45). Excellent night with good seeing (IQ20 for the most of the night). completed all the Korean programs.
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