2010-11-29 (UT) =============== Program: CL2 (YSOs, PI: Baron et al.) Observers: Stefan Kraus, Chris Farrington B1 B2 B3 ---------- S1 W1 E1 (W1=REF) S2 E2 W2 (S1S2E1E2W1W2: 4-1-4-1-2-5) CLIMB on beam 1,2,3 LT 20:32 = UT 04:32 = LST 01:14 LT 18:00 - humidity above 80%, high wind speed, strong jet stream predicted, which likely results in bad seeing LT 20:40 - humidity drops to 70%, opening one dome seeing is very very bad LT 01:40 - opening up, wind speed decreased, seeing still very poor (2-3cm) *** S1W1W2, W1=ref. LT 01:45 - HD50277 (calibrator for FU Ori) LT 02:00 - ksi_Gem (doing alignment) offsets: B2B3=0.397 cm cannot find fringes on B1B2 LT 02:50 - tried on different stars, still no fringe on B1B2 seeing even worse (1-2cm) offsets: B1B2=-0.96cm LT 03:00 - HD50277 (calibrator for MWC147) offset: B2B3=+0.378cm could not find B1B2 fringe again W1 is oscillating along elevation axis (maybe same problem as E1, E2, which could be caused by low temperatures) have to give up on YSO LT 03:30 - Beta CMi = HD58715 found again W1W2 fringe (short baseline), but not long baseline W1W2 jump like crazy LT 03:45 - closing W1,W2, keep S1 up to monitor the seeing