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

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

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3350..497c&link_type=abstract

Proc. SPIE Vol. 3350, p. 497-504, Astronomical Interferometry, Robert D. Reasenberg; Ed.

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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.

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