28 July 2008 Sensitive visible interferometry with PAVO
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Abstract
The Precision Astronomical Visible Observations (PAVO) beam combiner is a new concept in visible beam combination, recently commissioned at the CHARA array. By creating spatially-modulated fringes in a pupil plane and then dispersing with an integral field unit, PAVO utilizes the full multi-r0 aperture of the CHARA array over a standard 50% (630-950nm) bandwidth. In addition, minimal optimized spatial filtering ensures calibration that is in principle as good as using single-mode fibers. We describe the design of and initial results from the PAVO instrument.
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Michael J. Ireland, Antoine Mérand, Theo A. ten Brummelaar, Peter G. Tuthill, Gail H. Schaefer, Nils H Turner, Judit Sturmann, Laszlo Sturmann, Harold A McAlister, "Sensitive visible interferometry with PAVO", Proc. SPIE 7013, Optical and Infrared Interferometry, 701324 (28 July 2008); doi: 10.1117/12.788386; https://doi.org/10.1117/12.788386
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