2011-07-01 (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

humidity 30-40%
r0 = 5cm

set things up on delta sco = HD143275 

go for first fringes on HD160915
NIRO ALIGN
fringes found at +2800/+5800um

500Hz NONDEST LONGSCAN

21:20 go for first cal HD163955
NIRO ALIGN
     +2900um/+6100um
pixel 31 has ~1/2 the flux of pixel 12 ...
NIRO ALIGN again
     counts 60/40/20 - higher fluxes but still unbalanced ...
     vis ~ 0.6

r0 = 5-7cm

21:50 trg mwc275 = HD163296
saturating on pixel 12 ...
change rate to 1000Hz NONDEST LONGSCAN
we see weak fringes *occasionally* on 12 and 23.
recorded a few 100 scans.
sometimes 23 saturates ...
repeat with MEDSCAN to avoid saturation.
+2600um/+5900um
12 fringe is very clear, 23 pretty marginal but we think is there
+2640um/+5870um
saved 100s of scans

22:10 cal HD163955
      +2690um/+5570um
      
22:20 trg mwc275
      +2650um/+6000um
SNR improving (elevation?), now see fringes much more often, even 23
      and even 31!

22:40 cal HD163296
      +2720um/+5190um
nice data

22:50 trg mwc275
      +2620um/+5200um??
in this set we don't see the 23 fringe as much ...
   	
23:10 cal HD169520
      +2620um/+4860um
lost delay during the acquisition ...

23:30 change to: S2W2E2 (POPs 551)

23:50 check star HD160915
NIRO ALIGN
offsets +6940/+3530um

r0 = 5-6cm
humidity 40%

00:00 cal HD163955
saturating
change to 2000Hz NONDEST MEDSCAN
      +6960um/+3670um
      
00:25 trg mwc275
      +6990um/+3540um
nice data, all 3 fringes there most of the time
stopped the acquisition after 140 good scans so it doesn't take too
      long ...

00:55 cal HD163955
      +6950um/+3590um

01:00 trg mwc275
      +6950um/+3440um
ran out of delay with 30 scans to go ...

move REF.

01:15 cal HD163955 
      +6930um/+3500um

01:25 trg mwc275
      +6950um/+3380um

01:40 cal HD163955 
      +6900um/+3450um

01:45 trg mwc275
      +6890um/+3330um

01:55 cal HD163955 
      +6870um/+3400um	  

02:05 trg mwc275
      +6840um/+3250um

02:17 out of delay

go for v1295aql = HD190073

02:20 check star HD187691 = CHARA 260525
NIRO ALIGN
+7280um/+3060um

1000Hz NONDEST MEDSCAN

02:40 cal HD188385
      +7250um/+3050um

02:50 trg v1295aql
      +7240um/+3020um
clearly see 3 fringes, 12 and 23 weak, especially 12 ...
stopped after 130 good scans ...

try 750Hz see if we get more good fringes ...
doesn't really help much ...

03:20 cal HD188385
      +7200um/+2879um
crap ... took these data at 750Hz by error ...

now really back to 1000Hz

03:27 trg v1295aql
not really seeing the 12,23 fringes so much anymore ... high SNR 31
fringe ...

03:50 cal HD188385
       +7180um/+2756um

03:55 trg v1295aql
      +7260um/+2860um
do we have only the cross-fringe??

04:05 cal HD189509
      +7166um/+2725um
      
04:30 DONE.

END OF RUN.

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Summary:

S1W2E1: mwc275 - 3 brackets.
S2W2E2: mwc275 - 5 brackets.
S2W2E2: V1295 Aql - 3 brackets.

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