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Proceedings Paper

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

Paper Details

Date Published: 24 July 1998
PDF: 8 pages
Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); doi: 10.1117/12.317118
Show Author Affiliations
James H. Clark, U.S. Naval Observatory (United States)
Long Ha, U.S. Naval Observatory (United States)
David Mozurkewich, Naval Research Lab. (United States)
J. Thomas Armstrong, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 3350:
Astronomical Interferometry
Robert D. Reasenberg, Editor(s)

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