Table 2
VLT/NaCo SDI+ observating log of AB Dor and β Pictoris.
| Mode | Target | Type | UT-date | DIT × NDIT | Exposure time | FoV rotation | ⟨Airmass⟩ | ⟨ ϖ ⟩ | ⟨ τ0 ⟩ | ⟨Ec⟩ |
| (s) | (s) | (deg) | (′′) | (ms) | (%) | |||||
|
|
||||||||||
| SDI | AB Dor B | Unsat. | 15/07/2007 | 0.3454 × 20 | 207.24 | – | 1.34 | 0.73 | 5.5 | 60.2 |
| SDI | AB Dor B | Sat. | 15/07/2007 | 5 × 20 | 2800 | – | 1.51 | 0.85 | 5.3 | 50.2 |
|
|
||||||||||
| ASDI | β Pic | Unsat. | 12/01/2012 | 2.5 × 100 | 250 | – | 1.16 | 0.88 | 3.6 | 53.9 |
| ASDI | β Pic | Sat. | 12/01/2012 | 5 × 50 | 3500 | 27.8 | 1.12 | 0.80 | 4.2 | 66.9 |
Notes. “Unsat.” refers to unsaturated exposures and “sat.” stands for observations where the central star was saturated over several pixels to improve the dynamics. DIT, NDIT, ⟨Airmass⟩, ⟨ ϖ ⟩, ⟨ τ0 ⟩, and ⟨Ec⟩ refer to the individual integration time, the number of individual exposures, and the airmass, DIMM seeing, coherence time, and coherence energy at 2.2 μm averaged over the sequence.
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