A fiber-linked version of project TRIO

Details A fiber-linked version of project TRIO A fiber-linked version of project TRIO

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226...49c&link_type=abstract

In ESA Colloq. on Kilometric Opt. Arrays in Space p 49-61 (SEE N86-11096 01-89)

Physics

Optics

2

Fiber Optics, Optical Coupling, Spaceborne Astronomy, Spaceborne Telescopes, Synthetic Arrays, Cassegrain Optics, Coherent Light, Light Transmission, Michelson Interferometers

Scientific paper

It is shown that the TRIO spaceborne telescope array can be simplified by using two equal-length single-mode fibers to connect the two telescopes to the central station. The price to be paid is mostly a reduction of base-length at the short wavelength end of the spectrum. The number of parameters to be accurately controlled is much reduced: one merely has to guide telescopes and null path-difference. All motions of the central station become irrelevant. Star acquisition is performed in a docked configuration of all three elements. The necessary cables may also be used to feed power to the two telescopes; hence these require neither power generating nor propulsion devices. Possible base line scanning methods either in high orbits (e.g., at the Lagrange points) or in low orbits are discussed.

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