First results from fringe tracking with the PRIMA fringe sensor unit

@inproceedings{Sahlmann2010FirstRF,
  title={First results from fringe tracking with the PRIMA fringe sensor unit},
  author={Johannes Sahlmann and Roberto Abuter and S{\'e}rge M{\'e}nardi and Christian Schmid and Nicola di Lieto and Françoise Delplancke and Robert E. Frahm and Nuno Gomes and Pierre Haguenauer and Samuel A. Leveque and S{\'e}bastien Morel and A. Mueller and Thanh Phan Duc and Nicolas Schuhler and Gerard T. van Belle},
  booktitle={Astronomical Telescopes + Instrumentation},
  year={2010}
}
The fringe sensor unit (FSU) is the central element of the phase referenced imaging and micro-arcsecond astrometry (PRIMA) dual-feed facility for the Very Large Telescope interferometer (VLTI). It has been installed at the Paranal observatory in August 2008 and is undergoing commissioning and preparation for science operation. Commissioning observations began shortly after installation and first results include the demonstration of spatially encoded fringe sensing and the increase in VLTI… 
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The PRIMA fringe sensor unit
Context. The fringe sensor unit (FSU) is the central element of the phase referenced imaging and micro-arcsecond astrometry (PRIMA) dual-feed facility and provides fringe sensing for all observation
Results from the VLTI-PRIMA fringe tracking testbed
TLDR
The FSU is embedded in a semi-realistic environment, involving a VLTI-like control system and a laser metrology, and the system response to atmospheric piston jitter, tip-tilt disturbances and higher order aberrations, as they are expected at the observatory are probed.
Status of PRIMA for the VLTI or the quest for user-friendly fringe tracking
The Phase Referenced Imaging and Micro Arcsecond Astrometry (PRIMA) facility for the Very Large Telescope Interferometer (VLTI), is being installed and tested in the observatory of Paranal. Most of
First results using PRIMA FSU as a fringe tracker for MIDI
We report first results obtained from observations using a PRIMA FSU (Fringe Sensor Unit) as a fringe tracker for MIDI on the VLTI when operating with the 1.8-m ATs. Interferometric observations
Astrometry with the VLTI: calibration of the Fringe Sensor Unit for the PRIMA astrometric camera
Abstract The future PRIMA facility at the Very Large Telescope Interferometer (VLTI) in astrometric mode offers the possibility to perform relative narrow-angle astrometry with 10 micro-arcsecond
Frequency-comb stabilized laser sources for absolute distance metrology at the very large telescope interferometer
The forthcoming instrument of the Very Large Telescope Interferometer (VLTI), called Phase-Referenced Imaging and Micro-arcsecond Astrometry facility (PRIMA), uses a laser metrology system to monitor
Simultaneous observation of two stars using the PRIMA Star Separator
ESO is building the Phase Referenced Imaging and Microarcsecond Astronomy (PRIMA) facility for the Very Large Telescope Interferometer (VLTI) in Chile. PRIMA will enable interferometric imaging of
The ESPRI Project: differential delay lines for PRIMA
ESPRI is a project which aims at searching for and characterizing extra-solar planets by dual-beam astrometry with PRIMA@VLTI. Differential Delay Lines (DDL) are fundamental for achieving the
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PRIMA, the instrument for Phase-Referenced Imaging and Micro-arcsecond Astrometry at the VLTI, is currently being developed at ESO. PRIMA will implement the dual-feed capability, at first for two UTs
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