27 June 2006 Telescope design considerations and a unique approach to delay line construction for the proposed Antarctic interferometer at Dome C
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Abstract
Dome C is probably the best accessible site on earth for infrared interferometry, but siting an interferometer on the Antarctic plateau poses significant technical problems. EOS Technologies has studied how existing interferometric telescopes can be adapted to the Antarctic environment, having completed a design study for the Pathfinder for an International Large Optical Telescope (PILOT), and has proposed a unique technique for manufacturing delay lines on site, from prefinished coil stock. Modifications to EOST's standard 2m class telescopes are discussed, including lubrication options and differential expansion of materials assembled at room temperature and cooled to -70°C, as well as continuous, high precision delay line construction, using patented rotary sizing technology.
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R. Brunswick, B. H. Cook, G. Pentland, P. Sperber, "Telescope design considerations and a unique approach to delay line construction for the proposed Antarctic interferometer at Dome C", Proc. SPIE 6268, Advances in Stellar Interferometry, 626813 (27 June 2006); doi: 10.1117/12.671800; https://doi.org/10.1117/12.671800
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