Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Joseph Antebi"'
Autor:
Michael P. Brenner, Daniel P. Valentine, Andrew T. Sarawit, Keith B. Doyle, Frank W. Kan, Joseph Antebi
Publikováno v:
SPIE Proceedings.
The Haystack radio telescope is being upgraded to support imaging radar applications at 96 GHz. The Cassegrain antenna includes a 37 m diameter primary reflector comprising 432 reflector panels and a 2.84 m diameter hexapod mounted subreflector. Top-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd4d30eb670ebe70116c331ee99ac2f8
https://doi.org/10.1117/12.890123
https://doi.org/10.1117/12.890123
Autor:
Frank W. Kan, Joseph Antebi
Publikováno v:
SPIE Proceedings.
This paper will discuss analysis and design of large ground based telescopes for seismic hazard. Seismic hazard is an important issue for both the observatory and the telescope structure. Properly defined seismic specifications are vital. These speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e162a9ae2e00fe2c4d70868ba4a44b7
https://doi.org/10.1117/12.791243
https://doi.org/10.1117/12.791243
Publikováno v:
SPIE Proceedings.
Optimization programs are used routinely in the design of precision structures such as radio telescopes, but design optimization is merely the beginning, rather than the end, of the process. After selecting appropriate member sizes for the optimized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6837bea7245837c3ca069d0e2d2caa3
https://doi.org/10.1117/12.673541
https://doi.org/10.1117/12.673541
Publikováno v:
SPIE Proceedings.
Many antennas, such as the 100-m Green Bank Telescope, use a wheel-on-track systems in which the track segments consist of wear plates mounted on base plates. The wear plates are typically 2 to 3 inches thick and are case hardened or through hardened
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a29e2f5e634656027bce1e2e777d0e60
https://doi.org/10.1117/12.672686
https://doi.org/10.1117/12.672686
Autor:
Joseph Antebi, Frank W. Kan
Publikováno v:
Astronomical Structures and Mechanisms Technology.
Many antennas use wheel-on-track systems in which track segments consist of wear plates mounted on base plates. The hardened wear plates are typically connected to the base plates using bolts, and the base plates are supported on grout and anchored t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a871e856138ee18a449d79ed4bc63947
https://doi.org/10.1117/12.556576
https://doi.org/10.1117/12.556576
Autor:
Frank W. Kan, Joseph Antebi
Publikováno v:
Astronomical Structures and Mechanisms Technology.
Haystack, MIT's 37-m radio telescope, was built in the early 1960s. At the time considered to be a high-performance antenna, Haystack produced a number of outstanding scientific results. The antenna, originally designed to operate at 8-10 GHz, was up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fba962b461f85ead229c9507f9f0ff91
https://doi.org/10.1117/12.553443
https://doi.org/10.1117/12.553443
Autor:
Frank W. Kan, Joseph Antebi
Publikováno v:
Future Giant Telescopes.
The Giant Segmented Mirror Telescope (GSMT) is a 30-m fully-steerable ground-based optical/infra-red telescope with actively controlled segmented mirrors. This paper presents the initial point design for the telescope structure which was used to eval
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6ef37e9f9390b7531dd7753859f3fd7
https://doi.org/10.1117/12.459958
https://doi.org/10.1117/12.459958
Autor:
Joseph Antebi, Frank W. Kan
Publikováno v:
Future Giant Telescopes.
A novel track joint was developed for the azimuth track of the 50-m diameter Large Millimeter Telescope (LMT) now under construction in Mexico at an elevation of 4,600 m. The track, which is 430 mm wide by 230 mm deep, must be flat to within ± 0.3 m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2d6067655fab2980c41a6593cf9c7c6
https://doi.org/10.1117/12.459070
https://doi.org/10.1117/12.459070
Publikováno v:
SPIE Proceedings.
The Multiple Mirror Telescope, located on Mt. Hopkins AZ, previously used an array of six telescopes on a single mount to achieve an effective aperture of 4.5 m. It is now being converted to a 6.5-m telescope with a single primary. The design for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f808e061f60f6551d892e8388ddb90
https://doi.org/10.1117/12.319272
https://doi.org/10.1117/12.319272
Publikováno v:
SPIE Proceedings.
The Multiple Mirror Telescope (MMD on Mt. Hopkins AZ, which uses an array of six telescopes on a single mount to achieve an effective aperture of 4.5-rn, is to be converted to a 6.5-rn telescope with a single prirnary. This paper describes the object
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33b9663fdc6568f8a5581332e7a7cb9c
https://doi.org/10.1117/12.21501
https://doi.org/10.1117/12.21501