Design of the long delay lines for the Navy Prototype Optical Interferometer

James H. Clark III; Long Ha; David Mozurkewich; J. Thomas Armstrong

doi:10.1117/12.317118

24 July 1998 Design of the long delay lines for the Navy Prototype Optical Interferometer

James H. Clark III, Long Ha, David Mozurkewich, J. Thomas Armstrong

Proceedings Volume 3350, Astronomical Interferometry; (1998) https://doi.org/10.1117/12.317118
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

We have designed a method for introducing the large delays needed for the full 437 meter baseline imaging subarray of the Navy Prototype Optical Interferometer (NPOI). Long delay liens (LDLs) will introduce delay in discrete 29 meter increments for each of the six array elements. In conjunction with the 35 meters of delay from the continuously-variable fast delay lines, the LDLs will allow fringe tracking for all baselines at any position on the sky. We present the mechanical layout, alignment and vacuum design of the LDLs.

Citation Download Citation

James H. Clark III, Long Ha, David Mozurkewich, and J. Thomas Armstrong "Design of the long delay lines for the Navy Prototype Optical Interferometer", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); https://doi.org/10.1117/12.317118

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