Physics – Optics
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4840..116s&link_type=abstract
Future Giant Telescopes. Edited by Angel, J. Roger P.; Gilmozzi, Roberto. Proceedings of the SPIE, Volume 4840, pp. 116-128 (2
Physics
Optics
3
Scientific paper
We describe a 'point design' for a 30m Giant Segmented Mirror Telescope (GSMT) aimed at meeting a set of initial science goals developed over a period of two years by working groups comprised of more than 60 astronomers. The paper summarizes these goals briefly, captures the top-level performance requirements that follow from them, and describes a plausible, first-cut technical solution developed as part of an overall systems-level analysis. The key features of the point design are: (1) a fast (f/1) primary; (2) an adaptive secondary that serves both to compensate for the effects of wind buffeting and as the first stage of three adaptive optics systems: (i) multi-conjugate AO; (ii) high-performance on-axis AO; (iii) ground-level seeing compensation; (3) a radio telescope structure; (4) multiple instrument ports (prime focus; Nasmyth foci; direct Cass); (5) an hierarchical control system comprising multiple active and adaptive elements.
Gregory Brooke
Stepp Larry M.
Strom Stephen E.
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