The MROI fringe tracker: first fringe experiment

C. Jurgenson; F. Santoro; T. McCracken; K. McCord; A. Shtromberg; D. Klinglesmith; A. Olivarez; D. Buscher; M. Creech-Eakman; C. Haniff; J. Young

doi:10.1117/12.857128

21 July 2010 The MROI fringe tracker: first fringe experiment

C. Jurgenson, F. Santoro, T. McCracken, K. McCord, A. Shtromberg, D. Klinglesmith, A. Olivarez, D. Buscher, M. Creech-Eakman, C. Haniff, J. Young

Author Affiliations +

Proceedings Volume 7734, Optical and Infrared Interferometry II; 773446 (2010) https://doi.org/10.1117/12.857128
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

The MROI fringe tracking beam combiner will be the first fringe instrument for the interferometer. It was designed to utilize the array geometry and maximize sensitivity to drive the interferometer for faint source imaging. Two primary concerns have driven the design philosophy: 1) maintaining high throughput and visibilities in broadband polarized light, and 2) mechanical stability. The first concern was addressed through tight fabrication tolerances of the combiner substrates, and custom coatings. In order to optimize mechanical stability, a unique modular design approach was taken that minimizes the number of internal adjustments. This paper reports initial laboratory fringe and stability measurements.

Citation Download Citation

C. Jurgenson, F. Santoro, T. McCracken, K. McCord, A. Shtromberg, D. Klinglesmith, A. Olivarez, D. Buscher, M. Creech-Eakman, C. Haniff, and J. Young "The MROI fringe tracker: first fringe experiment", Proc. SPIE 7734, Optical and Infrared Interferometry II, 773446 (21 July 2010); https://doi.org/10.1117/12.857128

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