UT 2010-Jul-11
==============
Program CL3, PI Kraus

Observers: Fabien, Chris

CHARA/CLIMB

TEL       S1-S2-E1-W1-W2
POP       1-1-4-4-2


TRIPLET   S1-S2-W2  (start-up)
BEAM      B1-B2-B3
REF CART  W2

Starting
LT 11 July 2010, 20:47

Check star 55 Ser (HD 159876)

r0 = 2 to 5cm, cloudy


LT 21:20 Target: calibrator HD 164031
   	 Scanning for fringes on baseline S1-S2
	 S1-S2 offset -652.7
LT 21:27 S1-S2 -580  S2-W1 6757
LT 21:33 -680/6927 (notation = S1S2 / S2W1) 
LT 21:41 -784/6935
   	 recorded fringes
	 Mode: 750Hz dest
	 Vis: 0.59/0.39/0.36
	 Counts: 60

LT 21:44 switching to science target MWC275
LT 21:56 S2-W1 6813
LT 21:59 S1S2 -1295
LT 22:09 -1272 / 7089
      switch to 500Hz cause too low counts
      trying 500Hz/nondest
      selecting 250Hz/destruct

LT 22:16 Recording fringes on MWC275
      -1349 / 7140
      Vis: 0.43/0.10/0.10
      Counts: 80/70/90
LT 22:21 -1429/7164
LT 22:23 shutter sequence

LT 22:32 switched to calibrator HD164031 
LT 22:39 -1458/7280
LT 22:45 -1518/7549
LT 22:48 started recording 
   	 Vis: 0.49/0.34/0.31
	 Counts: 148/146/137
LT 22:51 -1596/7634
   	 clouds during shutter sequence (lost tip/tilt temporarily on all beams -- B1 ok, B2 pb at the end , B3 pb beginning)
LT 23:00 back to target
      250Hz/dest
LT 23:35 -1982/---
      problem finding fringes on S1W2 and S2W2
LT 23:41 
      back to calibrator to check
LT 23:46 -1943/8250
   	 saving cal HD164031
	 Vis: 0.36/0.23/0.22
	 Counts: 90/140/80

r0 3-5 cm, still cloudy
LT 23:54 -1975/8321
LT 0:08 -2100/????
   	recorded data on MWC275 anyway as we should be on the fringes...
	Vis:0.33/0.09/0.03
	r0 = 3-6cm
LT 0:31 back to cal 160031
LT 0:31 -2061/8847
   	Vis: 0.41/0.23/0.31
	Counts: 36/80/25
LT 0:37 -2070/8920
LT 0:47 Niro align
LT 0:51 Cal HD164031 -2037/9099
   	Vis:0.55/0.34/0/38
	Counts: 198/154/118
LT 0:59 -2032/9193
LT 1:07 switching to target
LT 1:07 -2010/9326 
LT 1:26 -1926/9592
   	could not find S1/S2-W2 but recorded fringes anyway for S1-S2 info
LT 1:58 Switched to Cal HD164031
   	-1707/10010
	recorded fringes

Changing baselines as all south targets are too low now.
LT 2:15  
TRIPLET   S1-E1-W1  
BEAM      B1-B2-B3
REF CART  E1

Problem with tip/tilt on E1 and W1, will not work despite laser alignment.
Need to go to the lab.

3:15 Tip/tilt problem solved
     Niro align

3:25 Using cal HD197950 (cal for MWC361)
4:01 found E1W1 19082um
     could not find S1W1 fringes


Summary
--
Bad r0 during all the night.
Cloudy night till 1am with tip/tilt dropouts every minute.

1 bracket with 3T data (S1S2W2) on MWC275.
2 brackets with 2T data (S1S2) and hopefully very faint 3T. Apparently crossed the null. 

Got the offsets for S1S2W2 and E1W1, useful for the coming nights.