Future of filled aperture telescopes: is a 100-m feasible?

Details Future of filled aperture telescopes: is a 100-m feasible? Future of filled aperture telescopes: is a 100-m feasible?

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3352..778g&link_type=abstract

Proc. SPIE Vol. 3352, p. 778-791, Advanced Technology Optical/IR Telescopes VI, Larry M. Stepp; Ed.

Physics

Optics

16

Scientific paper

We explore the scientific case and the conceptual feasibility of giant filled aperture telescopes, in the light of science goals needing an order of magnitude increase in aperture size, and investigate the requirements (and challenges) these imply for possible technical options in the case of a 100 m telescope. The 100-m f/6.4 telescope optical concept is of a four mirror design with segmented, spherical primary and secondary mirrors, and 8-m class aspheric tertiary and quaternary mirrors, providing a 3 arc minutes field of view. Building on the experience of the VLT and other large telescope projects, we investigate mirror fabrication issues, a possible mechanical solution, the requirements for the absolutely essential adaptive optics system and for the instrumentation package, and the implications for budget and schedule.

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