Optical telescopes and enclosures for ground-based interferometry: the CHARA array

Computer Science – Performance

Scientific paper

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Scientific paper

The telescope requirements of optical interferometry are somewhat different from conventional astronomy. The need for multiple units accentuates the importance of cost control, and at the same time provides opportunity for cost savings by careful procurement and production practices. Modern ideas about telescope enclosures offer significantly reduced dome seeing, but it is difficult to capture these benefits at low cost. The CHARA group has followed a series of design and bid procedures intended to optimize the cost-performance of the telescope enclosures. These have led to a compact but massive telescope design, blending modern and classical features, an unusual mirror blank selection process, and a novel telescope enclosure concept which allows a continuous tarde between wind protection and natural ventilation. This contribution will review and motivate the design decisions and show the resulting equipment and facilities.

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