2010-12-04 (UT) =============== Program: CL2 (YSOs, PI: Kraus et al.) Observers: Stefan Kraus, PJ Goldfinger B1 B2 B3 ---------- S1 W1 E1 S2 W2 E2 (S1S2E1E2W1W2: 4-1-4-1-2-5) CLIMB on beam 1,2,3 LT 23:35 = UT 07:35 = 04:37 lots of clouds, humidity starts at 15-20% level (UT4), rises to 30-35% at UT4-5, then down again to 15% a UT7. S2-E1-W2: ========= LT 19:20 - HD19637 doing NIRO alignment, some beams look really bad B1B2=0.02 cm, B2B3=+0.178 cm LT 19:55 - HD31421 doing NIRO alignment LT 20:02 - HD38164 (calibrator for FU Ori) cannot acquire star with S2 LT 20:10 - HD28930 (calibrator for FU Ori, very bright, K=3.7) recording data (1000 Hz, DEST, LONG, 4 Samples/Fringe, 1/2 APWHEEL) fringes on B1B2 quite weak, strong piston B1B2=0.012 cm, B2B3=+0.202 cm recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, 1/10 APWHEEL) S2 and W2 show oscillations LT 20:23 - FU Ori, seeing 1-6cm S2 does not see the star (maybe camera less sensitive, maybe blocked by the 60-inch dome) recording data on one baseline (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 20-30 counts, good quality B2B3=+0.2197 cm (E1-W2) LT 20:34 - HD38164 S2 does not see the star (so it's likely blocked by the 60-inch dome) recording data on one baseline (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 15 counts, good quality B2B3=+0.213 cm during the shutter sequence W2 unlocked, so maybe the injection was not representative during this time LT 20:40 - FU Ori S2 does not see the star (likely blocked by the 60-inch dome) recording data on one baseline (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 20 counts, good quality B2B3=+0.202 cm LT 20:48 - HD38527 (alternative calibrator for FU Ori, brighter K=3.9) S2 seems the star, although the object is just <1 deg away in Az and El, so maybe S2 camera is less sensitive recording data on three baselines (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 60-100 counts B1B2=-0.022 cm, B2B3=+0.208 cm recording data on three baselines (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, 1/4 APWHEEL), 50-70 counts NIRO alignment (very small adjustments) LT 21:04 - HD38164, seeing 1-8 cm S2 can now acquire the star recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 50-60 counts B1B2 fringe present, but weak B1B2=-0.017 cm, B2B3=+0.208 cm LT 21:15 - FU Ori recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 20-30 counts B1B2=-0.013 cm, B2B3=+0.206 cm Have all three fringes LT 21:23 - HD42618 (alternative calibrator for FU Ori) recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) LT 21:32 - FU Ori recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) B1B2=-0.008 cm, B2B3=+0.203 cm more clouds coming in LT 21:42 - HD38164 recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) B1B2=-0.008 cm, B2B3=+0.203 cm LT 21:50 - FU Ori recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) B1B2=-0.006 cm, B2B3=+0.202 cm fringes are very clear now on all baselines, seeing 2-8 cm LT 22:00 - HD50277 (calibrator for FU Ori and MWC147) B1B2=-0.026 cm, B2B3=+0.212 cm recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 25-40 counts LT 22:07 - HD47157 (calibrator for MWC147), seeing 1-7 go to 750 Hz to have more counts on fainter object recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 20-35 counts B1B2=-0.017 cm, B2B3=+0.199 cm LT 22:16 - MWC147 B1B2=-0.020 cm, B2B3=+0.197 cm recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 25-45 counts fringes on all three baselines! But fringes jump around quite a lot recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 20 counts 1000 Hz might be better, but not much B1B2=-0.020 cm, B2B3=+0.197 cm LT 22:34 - HD50277 B1B2=-0.163 cm, B2B3=+0.199 cm recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 30 counts recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) 1000 Hz seems now clearly better, but there are also more clouds moving in B1B2=-0.114 cm, B2B3=+0.205 cm LT 22:51 - MWC147, seeing 1-8 cm recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), 30-40 counts B1B2=-0.005 cm, B2B3=+0.197 cm everthing much fainter than during last visit fringe on B2B3 still quite clear, other baselines might also be there sometimes, but not clear started recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) E1 got lost while the beam sequence is recorded, so I interrupted the recording cannot find the star with E1 again LT 23:13 - HD47157 (calibrator for MWC147) recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) B1B2=-0.002 cm, B2B3=+0.198 cm fringes are jumping a lot during data recording E1 go lost, but was then reacquired after scan #600 low counts (5-14), so likely stronger clouds B1B2=-0.000 cm, B2B3=+0.204 cm LT 23:29 - MWC147 cannot reacquire the star with either telescope LT 23:31 - HD50277 (alternative calibrator for MWC147) recording data (750 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) during data recording E1 go lost, but was then reacquired B1B2=-0.000 cm, B2B3=+0.206 cm LT 23:52 - MWC147 record data on S2W2 baseline (other baseline is out of delay) recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) LT 23:59 - HD50277 record data on S2W2 baseline (other baseline is out of delay) recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL) S1-E2-W1: ========= LT 00:30 - HD31421 (NIRO alignment star) E2 is oscillating quite badly, so the spots in NIRO align clearly move around by 2-3 pixel we are losing maybe 30-50% of light due to E2 oscillation LT 00:38 - HD43386 (bright calibrator for MWC147, K=4.2) fringe search B1B2=-0.128 cm, B2B3=+0.195 cm S2 delay line has to be rehomed recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, 1/4 APWHEEL) piston is bad and flux varies rapidly LT 01:02 - MWC147 maybe fringe on B2B3, started recording, but then interrupted to check offset at calibrator again LT 01:15 - HD50277 recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), poor quality flux gets really low during the integration due to clouds B1B2=-0.130 cm, B2B3=+0.188 cm LT 01:26 - FU Ori recording data (1000 Hz, NON-DEST, LONG, 4 Samples/Fringe, NO APWHEEL), although no clear fringe seen I am basically recording around the expected position and hope that the clouds go away thick clouds, so we are idle... LT 03:00 - it clears up a bit LT 03:05 - HD55137 (calibrator for HD58647) thick clouds again LT 05:00 - closing down