ut 27 oct 2011

CHARA/CLIMB -- T Tauri run

PJ, Alicia, Rafael

setup:

S2E2W2 POPs 215 - start of night [can actually observe all night]
S1E1W1 POPs 321 - TTS pre-transit
S1E1W1 POPs 325 - TTS post-transit

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S2E2W2 POPs 215

beam 1 = S2
beam 2 = E2 = REF
beam 3 = W2

07:00 PST = UT 02:00

r0=2cm

setting up on delta del, finding 1st fringes etc ...
seeing ~2cm ...
found no fringes on del del (K=3.8) ...
try HD196134 (K=4.0) ...
go brighter HD223094 (K=2.9, 1.4mas) ...
NIRO 700Hz
got them: E2W2 offset -400um sum=500.
    	  S2E2 can't find fringes, expected to be about 1/2 amp, sum=300 ...

ut 06:00 

r0 improved to 4cm

NIRO align

HD223094
E2W2 offset -900um sum=500
S2E2 offset +6000um sum=300
got all 3 fringes

ut 07:00

since the conditions are not good, we decide to stay on S2E2W2 instead of changing beams ...

HD11363 early and bright cal for RY Tau
NIRO 700Hz DEST
E2W2 offset -500um
S2E2 offset +6000um
counts: 150/150/100

too early for ry tau ... take another set on hd11363 ...

ut 08:00 no fringes found on ry tau = HD283571 (K=5.4) ...

go to closer cal of similar Kmag HD24365 (K=5.8) ... 

ut 08:30 - HD24365 
+6100um/-400um
counts 40/40/30

changed to NIRO 700Hz NON-DEST

ut 08:47 - HD24365 
+6000um/-500um
counts 40/40/30

ut 09:10 - rytau = HD283571
+6100um/-460um
counts 70/60/40
very difficult fringe tracking
tried 500Hz but even worse
back to 750Hz
saving data, many scans without fringes but not too bad

ut 10:12 - cal HD24365
having several niro, vme etc failures & not finding fringes ...
had to re-home carts ...
S2 was on wrong star ...

ut 10:42 - cal HD24365
+900um/-990um
counts 20/20/20

NIRO align
NIRO 1000Hz NON-DEST

ut 11:05 - cal for FU Ori HD38164
+6300um/-580um
counts 60/60/40

ut 11:30 - fu ori = chara ID 320084
took a while because S2 not pointing right
+6300um/-725um
counts 50/50/40

ut 11:40 - cal HD38164
+6300um/-725um

ut 11:50 - fu ori
+6300um/-800um

ut 12:00 - cal HD38164
+6300um/-880um

ut 12:10 - fu ori
+6300um/-930um

ut 12:20 - cal HD38164
+6200um/-1000um

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