Table 1
Observing log.
| Target | UT date | Satellite spots(a) | IRDIS filter | IRDIS DIT(b) | Texp | Field rot.(c) | Sr(d) | DIMM seeing | τ0 |
|---|---|---|---|---|---|---|---|---|---|
| (s, #) | (min) | (deg) | (°) | (ms) | |||||
| 51 Eri | 2015-09-25 | No | K12 | 16 × 256 | 68 | 42 | 0.80–0.90 | 0.75 | 5.7 |
| β Pictoris | 2015-11-30 | Yes | H23 | 4 × 200 | 53 | 40 | N/A | 1.06 | 10.9 |
Notes. Observational data used for the analyses. Seeing and coherence time (τ0) correspond to the mean of the coronagraphic observation sequence. (a) Continuous satellite spot mode: calibration spots are always present in the coronagraphic data. (b) Detector integration time. (c)All observation were centered on the meridian passage of the target with an airmass between 1.08 and 1.13. (d) Strehl ratio computed by AO system’s Real Time Computer, and scaled to a wavelength of 1.6 μm.
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