2011-06-30 (UT)
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Program: CL6 (YSO Imaging, PI: Millan-Gabet et al.)

Observers: Rafael, PJ

(S1S2E1E2W1W2: 5-5-1-1-2-5)

CLIMB on beam 1,2,3

*** S1W2E1, W2=ref.
main goal: try MWC275 with this configuration.

LT - 20:30

** high humidity 80%

LT - 21:00

** humidity down to 60% 

NIRO ALIGN on delta Sco = HD143275
NIRO ALIGN on ref star HD160915

r0 = 1-2cm

the images on NIRO ALIGN look pretty awful ..

** humidity back up to 85%

closing for now ...

switch to:
*** S2W2E2, W2=ref.
main goal: try MWC275 with this configuration.

** humidity back down 60%

r0 = 1-3cm

LT - 01:30

01:40 ref star HD160195
NIRO ALIGN
fringes at +7000um/+3300um

1000Hz NONDEST LONGSCAN

01:55 cal HD163955
      +7050um/+3350um
      counts ~ 60
      vis ~ 0.3
pretty bad piston - sometimes loosing even the fringes for this K=4.5 cal!

02:10 trg mwc275 = HD163296
this is already 1 hour post-transit ...
can only find the W2E2 fringe ...
turn off skip low SNR and take some data ...
     xx/+3207um

02:40 cal HD163955
      +6700um/+3300um
      
humidity 20%

out of delay ...

go for v1295 Aql = HD190073

750Hz NONDEST LONGSCAN

03:00 ref star HD187691 = CHARA 260525
NIRO ALIGN
fringes at +7300um/+2900um

03:10 cal HD188385
      +7300um/+2900um
      counts ~ 40
      vis ~ 0.3 - why so low ...?

03:20 trg v1295aql
not finding fringes ...
counts 20-40 compared to 60-70 on previous nights at same rate
re-did NIRO ALIGN here to get more counts
no fringes ...
change to 500Hz for more signal
no fringes ...

change back to 750Hz to confirm the system vis
04:00 cal HD190498
      vis ~ 0.3 - compared to 0.5 on previous nights at same rate ...

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Summary:
S2W2E2: 
MWC275 fringes S2W2 only
v1295 Aql: no fringes, probably due to poor conditions.

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