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Paper: OSIRIS: An Optical Stellar Interferometer for Russian Investigations in Space
Volume: 194, Working on the Fringe: Optical and IR Interferometry from Ground and Space
Page: 381
Authors: Bagrov, A. V.; Boyarchuk, A. A.; Barabanov, S. I.; Mikisha, A. M.; Rykhlova, L. V.; Smirnov, M. A.
Abstract: Project OSIRIS is two-based interferometer designed for measurements of arcs between any two stars separated by angle from 30 to 100 degrees in the space. RKA and Russian Academy of Sciences included OSIRIS in the first step of the Russian Segment of the ISS. It may be launched in 2001-2003. The main idea of the OSIRIS project based on the ZODIAC ideas that was primerly designed for ISS as USA-RF project. It based on fast metrology as well as on fast light-receiver that allow to recalculate positions of every photon to the frozen interference field. Thus, all the shifts of optical elements would be avoided. As both of interferometers have the same base produced by common fiducial blocks, project OSIRIS has no external metrology system. Two versions of the OSIRIS project are the same arc-measurer but one is constructed for ISS and the other for special light-class spacecraft. The most advanced is the project for the Russian Segment of the ISS. The device would be mounted on Science&Energy Platform in the upper hemispheare of the ISS. Four-axis mounting is necessary to point interferometer to the chosen stars. Every observation will be of one bright star and the other may be a week one. As the exposure time for the week star may be long, it may consist of a set of short observations that mathematically would be composed together.
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