The new classic instrument for the navy precision optical interferometer

A. M. Jorgensen; H. R. Schmitt; J. T. Armstrong; E. K. Baines; R. Hindsley; D. Mozurkewich; G. T. van Belle

doi:10.1117/12.2232682

4 August 2016 The new classic instrument for the navy precision optical interferometer

A. M. Jorgensen, H. R. Schmitt, J. T. Armstrong, E. K. Baines, R. Hindsley, D. Mozurkewich, G. T. van Belle

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 990725 (2016) https://doi.org/10.1117/12.2232682
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The New Classic instrument was built as a electronics and computer upgrade to the existing Classic beam combiner at the Navy Precision Optical Interferometer (NPOI). The classic beam combiner is able to record 32 of 96 available channels and has a data throughput limitation which results in a low duty cycle. Additionally the computing power of the Classic system limited the amount of fringe tracking that was possible. The New Classic system implements a high-throughput data acquisition system which is capable of recording all 96 channels continuously. It also has a modern high-speed computer for data management and data processing. The computer is sufficiently powerful to implement more sophisticated fringe-tracking algorithms than the Classic system, including multi-baseline bootstrapping. In this paper we described the New Classic hardware and software, including the fringe-tracking algorithm, performance, and the user interface. We also show some initial results from the first 5-station, 4-baseline bootstrapping carried out in January 2015.

Citation Download Citation

A. M. Jorgensen, H. R. Schmitt, J. T. Armstrong, E. K. Baines, R. Hindsley, D. Mozurkewich, and G. T. van Belle "The new classic instrument for the navy precision optical interferometer", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990725 (4 August 2016); https://doi.org/10.1117/12.2232682

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