Open Access
Table A.1.
SPHERE-ZIMPOL observations of W Hya and the PSF reference star HD118877.
| Object | tobs | Filter | Seeing | AM | Strehl | Strehl |
|---|---|---|---|---|---|---|
| (UTC) | (cam1) | (″) | (H) | (Cnt820) | ||
| (cam2) | (Cnt748) | |||||
| 2019 May 30 (UTC) | ||||||
| W Hya | 01:05:13 | Cnt820 | 0.72 | 1.0 | 0.85 | 0.51 |
| Cnt748 | 0.48 | |||||
| HD118877 | 01:47:41 | Cnt820 | 0.74 | 1.0 | 0.68 | 0.32 |
| Cnt748 | 0.26 | |||||
Notes. AM: Airmass. The Strehl ratios in the visible were computed from the H-band Strehl ratios for W Hya, while they were measured from the observed ZIMPOL images for HD118877.
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