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Table 1

Summary of the AMBER and NACO speckle observations and the archived MIDI data of L2 Pup.

# t obs B p PA Seeing τ 0 DIT × Nf × Nexp Remarks
(UTC) (m) (°) (′′) (ms) (ms)

AMBER (A1-C1-D0): L2 Pup: 2011 Dec. 23 (UTC)
1 01:48:07 35.7/14.5/22.3 −175/23/174 0.9 4.0 100 × 500 × 5
2 02:33:57 35.7/14.9/22.3 −166/34/−180 1.7 2.5 100 × 500 × 5 Not used
3 03:11:28 35.8/15.3/22.3 −160/42/−174 1.2 3.0 100 × 500 × 5
4 03:47:56 35.8/15.6/22.2 −153/50/−169 0.9 3.7 100 × 500 × 5
5 04:24:20 35.7/15.9/22.1 −147/57/−164 1.1 3.5 100 × 500 × 10
6 06:00:50 34.4/15.8/21.4 −132/74/−151 1.7 1.7 100 × 500 × 10 Not used
7 07:04:38 32.5/15.1/20.5 −123/85/−144 2.2 1.3 100 × 500 × 15 Not used
8 07:23:33 31.8/14.7/20.2 −121/88/−142 2.2 1.4 100 × 500 × 10 Not used
9 08:41:54 27.4/12.8/18.2 −111/103/−134 2.7 1.1 100 × 500 × 5 Not used
C1 01:19:52 30.2/10.3/21.5 −174/33/173 0.8 4.7 100 × 1000 × 5 Sirius
C2 02:16:06 31.0/12.0/21.5 −162/47.5/−178 0.9 4.1 100 × 500 × 5 Sirius
C3 03:30:29 33.1/14.3/21.7 −149/60/−167 0.9 4.1 100 × 500 × 5 Sirius
C4 04:06:45 34.2/15.1/22.0 −144/64/−162 0.8 4.7 100 × 500 × 5 Sirius
C5 04:50:11 35.2/15.8/22.3 −138/69/−157 1.3 2.7 100 × 500 × 10 Sirius

AMBER (D0-H0-I1): 2011 Dec. 29 (UTC)
10 06:46:01 81.0/40.0/60.0 114/−21/86 0.9 7.0 100 × 500 × 8
11 07:38:25 78.1/40.4/55.6 124/−13/95 0.9 6.0 100 × 500 × 5
12 08:20:26 75.1/40.5/51.0 134/−67/103 0.9 6.5 100 × 500 × 5
13 08:56:34 72.3/40.5/46.6 142/−104/111 1.0–1.7 4.4 100 × 500 × 5 Not used
C6 06:23:18 76.7/39.2/61.1 107/−205/77 1.0 5.8 100 × 500 × 5 Sirius
C7 07:10:38 69.8/38.5/56.3 113/−137/79 2.0 2.8 100 × 500 × 1 Sirius
C8 07:20:40 73.1/40.6/49.0 136/−44/105 1.2 4.6 100 × 500 × 5 η Col

AMBER (D0-H0-I1): 2011 Dec. 30 (UTC)
14 02:28:00 68.4/32.2/60.5 67/−51/39 0.7 6.0 100 × 500 × 5
15 05:23:07 82.2/39.0/63.6 100/−32/72 1.5 2.7 100 × 500 × 5 Not used
C9 00:09:57 58.5/39.5/42.5 95/−39/52 1.2 3.8 100 × 500 × 5 Rigel
C10 01:10:28 50.7/36.8/43.2 83/−40/38 1.1 4.1 100 × 500 × 5 Sirius
C11 01:52:41 61.3/38.5/48.6 87/−40/48 0.9 4.7 100 × 500 × 5 Sirius
C12 03:47:19 81.4/39.0/64.0 101/−29/73 0.6 7.6 100 × 500 × 5 Rigel

NACO: 2012 Mar. 21 (UTC)
16 02:30:14 1.6 3.0 109 × 398 × 1
C13 02:38:11 2.0 3.0 109 × 300 × 1 Canopus

MIDI (UT3–UT4): 2004 Dec. 31 (UTC)
17 03:19:33 1.2 2.3 4 × 1000 × 2 Acquisition images
18 05:02:14 1.7 1.5 4 × 1000 × 2 Acquisition images
C14 01:47:07 1.1 2.6 4 × 1000 × 2 S Ori
C15 02:37:28 0.8 3.6 4 × 1000 × 1 S Ori
C16 07:09:13 0.9 2.7 4 × 1000 × 2 ε Cru

Notes. The seeing, which was measured with a differential image motion monitor (DIMM), and the coherence time (τ0) were measured in the visible (see for details http://www.eso.org/gen-fac/pubs/astclim/paranal/seeing/adaptive-optics/). Nf is the number of frames, and Nexp is the number of exposures.

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