The ESO NTT (New Technology Telescope) - The first active optics telescope

Details The ESO NTT (New Technology Telescope) - The first active optics telescope The ESO NTT (New Technology Telescope) - The first active optics telescope

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1114..302t&link_type=abstract

IN: Active telescope systems; Proceedings of the Meeting, Orlando, FL, Mar. 28-31, 1989 (A90-30852 12-74). Bellingham, WA, Socie

Astronomy and Astrophysics

Astronomy

6

Active Control, Mirrors, Reflecting Telescopes, Structural Design, Astronomical Observatories, Seeing (Astronomy), Temperature Control

Scientific paper

An account is given of the development history, design features, and performance characteristics of the ESO's 3.5-m aperture New Technology Telescope (NTT), which attempted to exploit the most advanced active-optics technology available in 1982 (when the design was finalized) while reducing overall costs. The basis for both cost and optical performance comparisons was the ESO's conventional 3.6-m aperture instrument. Due to the relaxation of low-frequency tolerances and subsequent correction with active optics, the NTT's performance is rivaled only by the Hubble Space Telescope in such respects as decentering and focusing errors.

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