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Table 1

Log of SPHERE observations.

IRDIS IFS
Date, UT start Setup Density DIT × NDIT × NEXP ΔPA ϵ Airmass τ0 Remarks
(s) (s) (°) (′′) (ms)
25/07/2015, 23:28 IRDIS-H23+IFS-YJ ND_1.0 2 × 5 × 1 8 × 3 × 1 0.1 1.0 1.1 1.4 Unsat. PSF
25/07/2015, 23:33 IRDIS-H23+IFS-YJ ND_0.0 64 × 3 × 16 64 × 3 × 15 35.7 1.1 1.1 1.2 ADI seq.
09/04/2016, 06:53 IRDIS-H23+IFS-YJ ND_1.0 2 × 2 × 1 4 × 1 × 1 0.1 0.6 1.1 4.6 Unsat. PSF
09/04/2016, 06:54 IRDIS-H23+IFS-YJ ND_0.0 32 × 8 × 16 64 × 4 × 16 49.2 0.6 1.1 4.5 ADI seq.
09/04/2016, 08:05 IRDIS-H23+IFS-YJ ND_1.0 2 × 2 × 1 4 × 1 × 1 0.1 0.7 1.1 3.5 Unsat. PSF
26/04/2019, 05:22 IRDIS-BBH+IFS-YJ ND_2.0 4 × 8 × 1 32 × 1 × 1 0.4 0.6 1.1 4.3 Unsat. PSF
26/04/2019, 05:25 IRDIS-BBH+IFS-YJ ND_0.0 32 × 14 × 16 64 × 7 × 16 79.3 0.6 1.1 4.3 ADI seq.
26/04/2019, 07:31 IRDIS-BBH+IFS-YJ ND_2.0 4 × 8 × 1 32 × 1 × 1 0.3 0.6 1.1 4.3 Unsat. PSF

Notes. DIT, NDIT, and NEXP correspond to the Detector Integration Time per frame, the number of individual frames per exposure, and the number of exposures, respectively. ΔPA is the amplitude of the parallactic rotation. ϵ and τ0 correspond to the seeing and coherence time, respectively.

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