46 citations · 282 across the 26 of their papers we have counts for
4 papers · 1 filter
FADE, an instrument to measure the atmospheric coherence time
A. Tokovinin, A. Kellerer, V. Coude Du Foresto
After proposing a new method of deriving the atmospheric time constant from the speed of focus variations (Kellerer & Tokovinin 2007), we now implement it with the new instrument,…
Interferometric observations of the multiple stellar system delta Velorum
A. Kellerer, M. G. Petr-Gotzens, P. Kervella +1
delta Velorum is a nearby (24pc) triple stellar system, containing a close, eclipsing binary (Aa, Ab) discovered in 2000. Multiple systems provide an opportunity to determine the s…
A method of estimating time scales of atmospheric piston and its application at DomeC (Antarctica)
A. Kellerer, M. Sarazin, T. Butterley +1
Temporal fluctuations of the atmospheric piston are critical for interferometers as they determine their sensitivity. We characterize an instrumental set-up, termed the piston scop…
Atmospheric coherence times in interferometry: definition and measurement
A. Kellerer, A. Tokovinin
Current and future ground-based interferometers require knowledge of the atmospheric time constant t_0, but this parameter has diverse definitions. Moreover, adequate techniques fo…