Table 1
Observing log.
| UT date | ϵ (″) | τ0 (ms) | AM start/end | Mode | Bands | DIT (s) × Nfr | ΔPA (°) | SR |
|---|---|---|---|---|---|---|---|---|
| 2016/12/12 | 1.6–2.2 | 2 | 1.23–1.25 | IRDIFS | Y J+H | 16(64) × 256(64) | 28.1 | 0.30–0.53 |
| 2017/02/07 | 0.4–0.9 | 4–8 | 1.24–1.26 | IRDIFS | Y J+H | 16(64) × 320(80) | 34.9 | 0.72–0.92 |
| 2017/09/29 | 0.5–1.0 | 2–4 | 1.39–1.26 | IRDIFS_EXT | Y JH+K1K2 | 48(64) × 100(75) | 27.6 | 0.69–0.87 |
Notes. The columns provide the observing date, the seeing measured by the differential image motion monitor (DIMM) at 0.5 μm, the associated coherence time, the airmass (AM) at the beginning and the end of the sequence, the observing mode, the spectral bands, the detector integration time (DIT) multiplied by the number of frames in the sequence (Nfr), the field of view rotation, and the Strehl ratio measured by the adaptive optics system at 1.6 μm. For the DIT × Nfr column, the numbers in parentheses are for the IFS data.
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