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 language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | J.R.P. Angel, R. Gilmozzi |
| Pages | 206-213 |
| Number of pages | 8 |
| Volume | 4840 |
| DOIs | |
| State | Published - 2002 |
| Event | Future Giant Telescopes - Waikoloa, HI, United States Duration: Aug 26 2002 → Aug 28 2002 |
Other
| Other | Future Giant Telescopes |
|---|---|
| Country | United States |
| City | Waikoloa, HI |
| Period | 8/26/02 → 8/28/02 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Mechanical concepts for 30 m class telescopes
AU - Davison, Warren
AU - Angel, J Roger P
PY - 2002
Y1 - 2002
N2 - 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.
AB - 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.
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U2 - 10.1117/12.459860
DO - 10.1117/12.459860
M3 - Conference contribution
VL - 4840
SP - 206
EP - 213
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Angel, J.R.P.
A2 - Gilmozzi, R.
ER -