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IBM Journal of Research and Development, 1976
The Large Space Telescope, which is scheduled to be put into orbit above the Earth's atmosphere by NASA in the early 1980s, is a large, multipurpose optical instrument that is being designed to provide an increase in observational capability of nearly 100× with respect to brightness, 10× in resolving power, and a substantial bandwidth improvement over ...
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The Large Space Telescope, which is scheduled to be put into orbit above the Earth's atmosphere by NASA in the early 1980s, is a large, multipurpose optical instrument that is being designed to provide an increase in observational capability of nearly 100× with respect to brightness, 10× in resolving power, and a substantial bandwidth improvement over ...
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Telescope performance at the Large Binocular Telescope
SPIE Proceedings, 2016The Large Binocular Telescope Observatory is a collaboration between institutions in Arizona, Germany, Italy, Indiana, Minnesota, Ohio and Virginia. The telescope uses two 8.4-m diameter primary mirrors mounted sideby- side on the same AZ-EL mount to produce a collecting area equivalent to an 11.8-meter aperture.
John M. Hill +4 more
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Cosmology and large telescopes
Astrophysics and Space Science, 1989Assuming a large collecting area, a good angular resolution and a large field of view expected for the Japanese National Large Telescope (JNLT), we demonstrate that JNLT will provide a useful means of studying cosmological objects of interest. Among them I discuss how cosmological parameters and evolutionary effects can be obtained from redshift ...
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Extremely large telescopes at risk
Science, 2023Images of the cosmos from the Hubble Space Telescope and the James Webb Space Telescope have awed the public and astronomers alike. Until the Hubble, breakthroughs in astronomy came from big telescopes on mountain-top observatories—discoveries that include the expansion of the Universe and planets orbiting other stars.
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James Webb Space Telescope: large deployable cryogenic telescope in space
Optical Engineering, 2012 The James Webb Space Telescope (JWST) is an infrared space telescope designed to explore four major science themes: first light and reionization, the assembly of galaxies, the birth of stars and protoplanetary systems, and planetary systems and origins ...
Paul A Lightsey, Lee Feinberg
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Telescopic beamforming for large wireless networks
2013 IEEE International Symposium on Information Theory, 2013We consider a wireless network with n users distributed over a square area A = n. Under line-of-sight propagation, this network has Θ(√n) degrees of freedom. At high SNR, these degrees of freedom can be readily achieved by multi-hop relaying between nodes. At low SNR however, the performance is determined by the power transfer in the network.
Alla Merzakreeva +2 more
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The UK Large Telescope project
Astrophysics and Space Science, 1989The current status and the organization of the UK Large Telescope programme are summarized. Some scientific and design issues are discussed on the basis of work done for the SERC Large Telescope Panel report. A national Phase A programme is now underway addressing more detailed aspects of these questions.
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Fast optics for large telescopes
Astrophysics and Space Science, 1989Reports on two optical designs studied in connection with The JNLT Project: namely, the primary corrector and the camera for a spectrograph, are presented.
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SPIE Proceedings, 2008
The Large Binocular Telescope (LBT) Observatory is a collaboration between institutions in Arizona, Germany, Italy, Indiana, Minnesota, Ohio and Virginia. The telescope on Mt. Graham in southeastern Arizona uses two 8.4-meter diameter borosilicate honeycomb primary mirrors mounted side-by-side to produce a collecting area equivalent to an 11.8-meter
J. M. Hill +8 more
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The Large Binocular Telescope (LBT) Observatory is a collaboration between institutions in Arizona, Germany, Italy, Indiana, Minnesota, Ohio and Virginia. The telescope on Mt. Graham in southeastern Arizona uses two 8.4-meter diameter borosilicate honeycomb primary mirrors mounted side-by-side to produce a collecting area equivalent to an 11.8-meter
J. M. Hill +8 more
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The Large Millimeter-Wave Telescope
1997The Large Millimeter-wave Telescope (LMT) is a joint project of the United States and Mexico. The project goal is to construct and operate a 50m diameter millimeter-wave antenna. The antenna, shown schematically in Figure 1, will be built on a mountain site in Mexico and will have the highest gain and the highest overall sensitivity of any millimeter ...
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