Summary of SPHERE-ZIMPOL observations for IK Tau and its PSF reference star HIP 20188.
|IK Tau: 2016 Nov 20 (UTC)|
|HIP 20188: 2016 Nov 20 (UTC)|
Notes. DIT: detector integration time. NDIT:number of frames. Nexp: number of exposures of each polarization component in each polarization cycle at each dithering position. Npol: number of polarization cycles at each dithering position. Ndither: number of dithering positions. The seeing was measured in the visible. AM: airmass. The Strehl ratios in the visible were calculated from the H-band Strehl ratiosfor IK Tau, while they were measured from the observed ZIMPOL images for HIP 20188.
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