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Table 1

VLTI/AMBER and CHARA/VEGA observing logs for δ Sco.

VLTI/AMBER

Observing time Telescopes Base length Position angle Mode Exposure/Frame Seeing Calibrators
Start (UTC) (m) (°) (s) (″) (HD)

2007-09-05 23:52 D0-H0-G1 67/56/71 –28/82/20 MR-K-F 1.00 0.67 146 791
2008-05-03 06:12 A0-K0-G1 90/90/127 –151/–61/–106 LR-HK 0.05 0.79 139 663
2008-05-24 04:28 A0-D0-H0 64/32/96 –109/–109/–109 LR-HK 0.05 0.99 139 663, 132 150
2008-05-25 04:05 A0-D0-H0 64/32/96 –110/–110/–110 LR-HK 0.05 0.81 139 663
2008-07-11 01:48 A0-K0-G1 90/90/127 –151/–61/–106 LR-HK 0.05 0.97 139 663, 166 295
2009-04-11 07:40 A0-K0-G1 90/90/128 –151/–62/–106 LR-HK-F 0.05 0.63 139 663
2009-04-11 08:19 A0-K0-G1 90/88/125 –148/–57/–103 LR-HK-F 0.05 0.82 139 663
2009-06-04 05:20 E0-G0-H0 30/15/45 –100/–100/–100 LR-HK-F 0.05 0.74 139 663
2009-06-04 05:20 E0-G0-H0 28/14/42 –97/–97–/97 LR-HK-F 0.05 0.94 139 663
2009-07-30 02:27 D0-H0-G1 67/55/71 –26/83/20 MR-K-F 1.00 0.76 139 663
2010-04-15 07:12 D0-H0-G1 64/71/71 72/–172/135 MR-K-F 0.50 0.82 139 663
2010-04-15 07:55 D0-H0-G1 63/71/71 76/–167/140 MR-K-F 0.50 0.94 139 663
2010-04-19 05:14 D0-H0-G1 60/71/69 60/177/127 HR-K-F (2.17 μm) 6.00 0.85 139 663
2010-04-20 09:14 D0-H0-G1 54/71/66 84/–159/155 HR-K-F (2.06 μm) 6.00 0.60 139 663
2010-05-10 05:11 D0-H0-G1 128/90/90 –110/115/–156 LR-K 0.05 0.83 139 663
2010-05-10 05:52 D0-H0-G1 126/90/90 –107/119/–90 LR-K 0.05 0.95 139 663

CHARA/VEGA

Observing time Telescopes Length Position angle Mode Detector r0 Calibrators
Start (UTC) (m) P(°) (cm) (HD)

2010-05-05 08:50 S1-S2 20 –16 MR Red 17 144 470
2010-05-05 09:37 S1-S2 21 –25 MR Red 18 144 470
2010-05-05 10:14 S1-S2 23 –30 MR Red 17 144 470
2010-06-24 04:31 E1-E2 63 –111 MR Red 9 144 470

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