VLT 8-m unit telescope main structure: design solutions and performance calculation

Marco Quattri; Francesco Dimichino; Gianpietro Marchiori; Antonio Piccinini

doi:10.1117/12.176157

1 June 1994 VLT 8-m unit telescope main structure: design solutions and performance calculation

Marco Quattri, Francesco Dimichino, Gianpietro Marchiori, Antonio Piccinini

Proceedings Volume 2199, Advanced Technology Optical Telescopes V; (1994) https://doi.org/10.1117/12.176157
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

The main structure is defined as the telescope mechanical structure including the drives, the encoder system, the hydrostatic bearing system and all those subsystems which make the system self standing safe and testable as an electromechanical system. Since the conceptual design started the main goal was to design a telescope structure with high first locked rotor eigenfrequencies and to eliminate all possible causes of non linear effects on the telescope motion (stick-slip effect in ball bearings and dragging of cable wraps). Moreover the previous experience had shown the superiority from the repeatability point of view of the direct coupled encoders. The paper describes the resulting final design performed by the Italian Consortium AES (Ansaldo GIE-Genova, EIE-Venezia and SOIMI-Milano) which could provide all the features necessary to meet the demanding requirements of ESO's technical specifications.

Citation Download Citation

Marco Quattri, Francesco Dimichino, Gianpietro Marchiori, and Antonio Piccinini "VLT 8-m unit telescope main structure: design solutions and performance calculation", Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); https://doi.org/10.1117/12.176157

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