Observers: David Homan, Joe Lyman 09:30 Dome opened.TAT: Morgan Fraser, Giorgos Leloudas Support team: Morgan Fraser Calibrations: biases, dome arcs Conditions: Closed at start of night, heavy cloud cover. Quite high winds, ~10m/s. Passing clouds for the short duration dome was opened. Close for 2nd half of night due to thick clouds. UT Target Type Comment ============================================================================================== 02:30 Dome opened under still poor conditions, switch to SOFI. 02:35 AT2017gah followup JHK - very marginal detection in J exposures only. 02:45 AT2017gah followup Started BG OB - no guide star and conditions very poor. Didn't start spectrum, instead repeated JHK for AT2017gah with extended OBs - clouds hit and nothing in exposures. 03:20 AT2017gah followup JHK again. Conditions improved a bit, good detection in individual J frames, seems to be there in HK 03:50 AT2016iks followup JHK. K band in particular was affected by incoming clouds 05:15 Nothing visible on all-sky cam. Wait out clouds. 05:40 Dome closed. |