Table A.1
SPHERE observations of YSES 2.
| Observation date | Filter | FWHM (a) | NEXP × NDIT × DIT (b) | Δπ (c) | ⟨ω⟩(d) | ⟨X⟩(e) | ⟨τ0⟩(f) |
|---|---|---|---|---|---|---|---|
| (yyyy-mm-dd) | (mas) | (1 × 1 × s) | (°) | (′′) | (ms) | ||
| 2018-04-30 | H | 50.5 | 4 × 1 × 32 | 0.98 | 0.87 | 1.343 | 6.25 |
| 2020-12-08 | Ks | 61.7 | 1 × 18 × 16 | 1.37 | 0.55 | 1.52 | 4.30 |
Notes. (a)Full width at half maximum measured for the non-coronagraphic stellar PSF. (b) NEXP describes the number of exposures, NDIT is the number of subintegrations per exposure, and DIT is the detector integration time of an individual subintegration. (c) Δπ describes the amount of field rotation during the observation, if it is carried out in pupil-stabilized mode (only valid for CI observations). (d) ⟨X⟩ denotes the average airmass during the observation. (e) ⟨ω⟩ denotes the average seeing conditions during the observation. (f) ⟨τ0 ⟩ denotes the average coherence time during the observation.
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