Baseline monitoring for astrometry in interferometry (2008)
Hrynevych, Michael A., Ligon, E. Robert, Colavita, M. Mark
One of the science goals of NASA's Navigator program is ground-based narrow-angle astrometry for extra-solar planet detection, which could be done as part of the proposed Outrigger Telescopes...
Differential phase interferometry with the Keck Telescopes. (2008)
Vasisht, Gautam, Colavita, M. Mark
We summarize the Differential Phase (DP) technique as well as the planned implementation at the Keck Interferometer. Multicolor phase measurements are potentially a powerful astrophysical probe - and...
Real-time control system for the Keck Interferometer Nuller: methods and maintenance (2008)
Jean I. Garcia, M. Mark Colavita, Andrew J. Booth
The real-time control system for the Keck Interferometer Nuller provides the N-band fringe tracking capabilities of the instrument, as well as correcting for atmospheric dispersion in the system....
M. Mark Colavita, Michael Shao
The recent discoveries of extra-solar planets have generated great excitement. However, all of the detections have been indirect, and are resulted from only one technique, namely high precision...
Measuring extended structure in stars using the Keck interferometer nuller (2006)
Koresko, Chris, Colavita, M. Mark, Serabyn, Eugene, Booth, Andrew, Garcia, Jean
This paper presents an overview of the observing and data reduction strategies used to produce a calibrated measurement of the off-axis light. During the observations, the instrument cycles rapidly...
Nulling at the Keck interferometer (2006)
Colavita, M. Mark, Serabyn, Gene, Wizinowich, Peter L., Akeson, Rachel L.
The nulling mode of the Keck Interferometer is being commissioned at the Mauna Kea summit. The nuller combines the two Keck telescope apertures in a split-pupil mode to both cancel the on-axis...
Keck Interferometer autoaligner : algorithms and techniques (2006)
Hrynevych, Michael A., Tsubota, Kevin, Smythe, Robert, Dahla, Wayne, Bella, Jim, Colavita, M. Mark, ...
The Keck Interferometer includes an autoalignment system consisting of pop-up targets located at strategic locations along the beam trains of each arm of the instrument along with a sensor and...
New insights on the AU-scale circumstellar structure of FU Orionis (2005)
Malbet, Fabien, Lachaume, Régis, Berger, Jean-Philippe, Colavita, M. Mark, Di Folco, Emmanuel, Eisner, Josh A., ...
We report new near-infrared, long-baseline interferometric observations at the AU scale of the pre-main-sequence star FU Orionis with the PTI, IOTA and VLTI interferometers. This young stellar object...