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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