Mechanical concepts for 30 m class telescopes

Warren Davison, J Roger P Angel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The 20 20 Telescope is a 30 meter class telescope comprised of two 21.2 m collector telescopes on a 100 m circular track. Each collector telescope has a focal ratio of F: 0.7 and is comprised of seven 8.4 m segments. There is an instrument bridge that carries the combining instrument. The proposal for 20 20 is to have discrete combiner stations for 30, 60, and 100 meter baselines. Additional focal stations are implemented for Nasmyth and bent Cassegrain. The Track has the same segmented construction and tracking motion on hydrostatic bearings as LBT. The collector telescope buildings will co-track and co-rotate on separate tracks. The 30 m design has the same basic shape as a single 21 meter Collector but many aspects are different. The 30 meter telescope is a single hexagonal aperture with a primary at F: 0.5. There are 13 that are 8.74m hexagons and 6 half hexagons. The 30 m telescope has primarily Nasmyth platforms behind the primary mirror. Both telescopes have a 30 meter equivalent circular aperture. Both telescopes have high structural performance, at 6.5 Hz and 5.3 Hz respectively. Both are balanced, and use similar designed components. Comparison of their characteristics and design differences can show the strengths and weaknesses of each.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ.R.P. Angel, R. Gilmozzi
Pages206-213
Number of pages8
Volume4840
DOIs
StatePublished - 2002
EventFuture Giant Telescopes - Waikoloa, HI, United States
Duration: Aug 26 2002Aug 28 2002

Other

OtherFuture Giant Telescopes
CountryUnited States
CityWaikoloa, HI
Period8/26/028/28/02

Fingerprint

Telescopes
telescopes
accumulators
hexagons
stations
apertures
Hydrostatic bearings
hydrostatics
proposals
Mirrors
platforms
mirrors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Davison, W., & Angel, J. R. P. (2002). Mechanical concepts for 30 m class telescopes. In J. R. P. Angel, & R. Gilmozzi (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4840, pp. 206-213) https://doi.org/10.1117/12.459860

Mechanical concepts for 30 m class telescopes. / Davison, Warren; Angel, J Roger P.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.R.P. Angel; R. Gilmozzi. Vol. 4840 2002. p. 206-213.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Davison, W & Angel, JRP 2002, Mechanical concepts for 30 m class telescopes. in JRP Angel & R Gilmozzi (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4840, pp. 206-213, Future Giant Telescopes, Waikoloa, HI, United States, 8/26/02. https://doi.org/10.1117/12.459860
Davison W, Angel JRP. Mechanical concepts for 30 m class telescopes. In Angel JRP, Gilmozzi R, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4840. 2002. p. 206-213 https://doi.org/10.1117/12.459860
Davison, Warren ; Angel, J Roger P. / Mechanical concepts for 30 m class telescopes. Proceedings of SPIE - The International Society for Optical Engineering. editor / J.R.P. Angel ; R. Gilmozzi. Vol. 4840 2002. pp. 206-213
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