Table 1

Observing log of the β Pictoris data, and corresponding atmospheric conditions.

Mode Date Band Density filter Camera DIT NDIT Nexp θstart/θenda ⟨EC⟩b τ0c
(s) (°) (%) (ms)

PSF 2010-03-20 Ks ND-Short S13 0.35 100 8 62.3/63.8 42.3 3.3
Sat. 2010-03-20 Ks S13 0.35 100 120 64.0/83.9 36.9 3.7

PSF 2010-04-10 Ks ND-Short S27 0.15 100 8 60.4/61.2 22.1 7.9
Sat. 2010-04-10 Ks S27 0.15 150 160 62.1/82.2 20.4 7.4

Notes. 

(a)

Range of parallactic angles (θ) at the start/end of the observation.

(b)

The average coherent energy (K-band) as estimated online by the AO system.

(c)

The average coherence time as estimated online by the AO system.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.