Table 1
Summary of observations.
| Instrument | Mode | Waveband | Date | texp (min) | θ (mas) | Main target emission | Figures |
|---|---|---|---|---|---|---|---|
| H23 | 2015-10-27 | 68 | 60 | Continuum, [Fe II] line | 2 (top panels), 3, 4 | ||
| K12 | 2015-12-26 | 51 | 80 | Continuum, H2 line | – | ||
| IRDIS | DBI | K12 | 2016-01-01 | 85 | 80 | Continuum, H2 line | – |
| H23 | 2017-11-29 | 102 | 60 | Continuum, [Fe II] line | 2 (top panels), 3 | ||
| Y J | 2015-10-27 | 68 | 40 | [S II], He I, [Fe II] lines | – | ||
| Y H | 2015-12-26 | 51 | 50 | [S II], He I, [Fe II] lines | – | ||
| IFS | IFS | Y H | 2016-01-01 | 85 | 50 | [S II], He I, [Fe II] lines | – |
| Y J | 2017-11-29 | 102 | 40 | [S II], He I, [Fe II] lines | 2 (bottom left panels) | ||
| DPI | I′ | 2015-12-17 | 40+16 | 30 | Polarized continuum | 1, 4 | |
| ZIMPOL | RDI | I′ | 2015-12-27 | 11+11 | 30 | Continuum | 1 |
| SDI | Hα | 2015-11-08 | 47 | 30 | Hα | 2 (bottom right panel), 4 | |
Notes. Columns are: instrument, observing mode, date, waveband, exposure time, angular resolution, main target emission, and relative figure in this work. DBI: dual band imaging, IFS: integral field spectroscopy, DPI: differential polarization imaging, RDI: reference-star differential imaging, SDI: spectral differential imaging.
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