ut 29 oct 2011

CHARA/CLIMB -- T Tauri run

PJ, Alicia, Rafael

setup and nominal plan:

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

PST 06:40 = UT 01:40 - telescopes inited on delta del.

clear, seeing ok.

ut 02:03 - all fringes found on delta del
NIRO 750Hz DEST
NIRO align
+6000um/-800um

ut 02:30 - HD194708 cal for v1685cyg
NIRO align
NIRO 500Hz NONDEST
SHORT SCAN to avoid saturation of top pixel
+5500um/-900um
counts 100/60/40

ut 03:00 - v1685 Cyg = CHARA ID 320079
?? / -900um
not finding the 12 = S2E2 again (same as last night) ...
taking data with the E2W2 fringes only (about 200+ scans)

ut 03:20 - HD194708
+5700um/-940um
problem: shutters are not being closed during darks/beams
PJ typed "oss" in the climb server, fixed it
file 003 should be OK

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ut 03:50 - HD195405 cal for v1977 cyg
NIRO 500Hz NONDEST MED SCAN
+5600um/-1000um
counts 50/40/40

ut 04:30 - v1977 cyg = CHARA ID 320107
+5600um/-1000um
counts 50/30/25
fringe S2E2 quite small and not there often ...
but it saved a complete file fine
(tried NIRO 250Hz but fringes were much worse)

ut 04:45 - HD195405
+5500um/-1110um
out of delay after about 100 scans ...

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test S1 ACQ/FIND: they seem to work, so we decide to change config

S1E1W1 POPs 321 for TTS pre-transit

ut 06:00 - HD15257 - init telescopes and NIRO align

ut 06:30 - HD11120 - find fringes maybe first cal
+700um/+2100um
take a couple of files ... waiting for TTS to come in delay ...

ut 07:00 - HD26736 cal for DF Tau
NIRO 500Hz NONDEST MED SCAN
+580um/+2700um
counts ~70

ut 07:20 - DF Tau = HD283654
+700um/+2770um
counts ~70
very weak fringes but they are there, saving data ...

ut 08:00
for some reason had telescope trouble going back to cal
re-init on bright HD23630

ut 08: - HD26737
+850um/+2400um
counts ~80

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NIRO align

ut 08:25 - HD284858 cal for LkCa15 
NIRO 500Hz NONDEST MED SCAN
+840um/+2500um
fringes have low SNR ... (K=7.975)
(250Hz was worse)
counts ~ 10

NOTE: not sure i have been consistent earlier about recording counts *after*
dark subtractions!

ut 09:20 - LkCa15 = CHARA ID 320090 (K=8.2)
cannot find fringes ...
tried 250Hz (~10 net counts) and 150Hz

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ut 09:35 - HD38164 cal for FU Ori
+850um/+2700um

ut 09:50 - FU Ori = CHARA ID 320084
+988um/+2500um

ut 10:10 - HD38164
+980um/+2600um
ran out of delay before end of file

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changed W1 POP 1->5
S1E1W1 POPs 325

took forever to find fringes after POP change ...
had to go to a bright fringe find star ...
+600um/+1700um

ut 11:50 - HD284253 cal for BP Tau
out of delay for BP Tau
also for DG Tau

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ut 12:00 - HD35076 cal for RW Aur
+600um/+1600um

seeing has deteriorated a lot!

ut 12:17 - RW Aur = HD240764
cannot find fringes ...

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end of run