Table 2
Summary of VLTI/PIONIER observations.
| Run | Night | # targets | Seeing [′′] | t0 [ms] | Condition notes |
|
|
|||||
| 089.C-0365(A) | 2012-04-27 | 0 | – | – | Night lost due to bad weather |
| 089.C-0365(A) | 2012-04-28 | 10 | 1.2 (0.7–1.8) | 2.0 (1.5–2.1) | Average conditions |
| 089.C-0365(A) | 2012-04-29 | 11 | 0.8 (0.6–1.8) | 4.5 (1.5–6.2) | Good conditions |
| 089.C-0365(B) | 2012-07-23 | 9 | 1.0 (0.7–1.7) | 3.0 (2.0–4.0) | Good conditions |
| 089.C-0365(B) | 2012-07-24 | 9 | 0.7 (0.5–1.0) | 3.5 (2.5–5.0) | Good conditions |
| 089.C-0365(B) | 2012-07-25 | 13 | 0.9 (0.6–1.7) | 2.5 (1.5–4.0) | Good conditions |
| 090.C-0526(A) | 2012-10-14 | 11 | 0.8 (0.6–1.3) | 2.0 (1.5–3.0) | Good conditions |
| 090.C-0526(A) | 2012-10-15 | 6 | 1.3 (0.8–2.4) | 1.5 (1.0–2.5) | Bad conditions, tech. loss |
| 090.C-0526(A) | 2012-10-16 | 11 | 0.9 (0.6–1.9) | 1.5 (1.0–3.0) | Good conditions |
| 090.C-0526(B) | 2012-12-15 | 6 | 0.9 (0.5–1.5) | 5.0 (3.0–7.0) | Good conditions, tech. loss |
| 090.C-0526(B) | 2012-12-16 | 8 | 1.2 (0.7–2.1) | 3.0 (2.0–5.0) | Bad conditions |
| 090.C-0526(B) | 2012-12-17 | 8 | 0.8 (0.6–2.0) | 4.0 (2.0–6.0) | Average conditions |
Notes. The seeing is measured as DIMM seeing in the visible. The quantity t0 the nominal coherence time. The first value in both columns gives the typical value for the night, and the values in parentheses the range observed. In addition, the condition notes column gives an evaluation of the conditions based on instrument performance and data quality, as the nominal values of r0 and t0 are not always fully correlated with the actual performance of the observations (e.g., due to local turbulences at the ATs not measured by the DIMM seeing). The sum of the number of targets is larger than the total number of targets observed (92), as some targets have been re-observed due to limited data quality or the observations have been carried out over two nights owing to timing constraints.
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