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20 October 2004 The LINC-NIRVANA testbed Fizeau interferometer
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Abstract
We present a 1:3 scale model of the LINC-NIRVANA interferometer. This laboratory Fizeau, or image plane, interferometer allows us to test many aspects of LINC-NIRVANA before the final instrument is integrated. We have used this testbed interferometer to practice alignment procedures, verify the optical design, show that point spread functions with low (10\%) Strehl ratio can maintain high fringe contrast, and test the fringe tracking algorithm by running the interferometer in a closed piston loop.
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David R. Andersen, Thomas Bertram, Peter Bizenberger, Sebastian Egner, Thomas M. Herbst, Roberto Ragazzoni, and Christian Straubmeier "The LINC-NIRVANA testbed Fizeau interferometer", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551283; https://doi.org/10.1117/12.551283
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