ULTIMA free-flying large-aperture space telescope

Details ULTIMA free-flying large-aperture space telescope ULTIMA free-flying large-aperture space telescope

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3136..200c&link_type=abstract

Conference Paper, SPIE Proceedings, Vol. 3126, p. 200-207.

Computer Science

Spaceborne Telescopes, Libration, Apertures, Free Flight

Scientific paper

Project ULTIMA is an investigation into the feasibility of building ultralarge aperture visible/mid-LR space telescopes. A promising concept found by the study is a freely flying spherical primary mirror, 20 m or more in diameter, located at the L1 or L2 Earth-sun libration point. The primary would be passively cooled to 45 K. There would be no metering structure. Instead, using a combination of alignment and steering mirrors, reaction wheels, and microthrusters, the aspherical secondary mirror, active tertiary mirror, and focal plane instruments would be precisely stationed in the correct position above the primary. The primary advanced composition would be either a membrane or ultralight segmented technology. Preliminary findings show that a 20-30-m telescope may be feasible for imaging in the 1-20-micron regime.

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