Results 191 to 200 of about 5,906 (233)
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Hubble Space Telescope prescription retrieval
Applied Optics, 1991Image inversion is a technique whereby computer-generated images based on an optical system model are compared with images from the real system in a nonlinear least squares estimation procedure. The differences are used to change model parameters until the model-based images match the actual images.
D, Redding, P, Dumont, J, Yu
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Chemical & Engineering News Archive, 1990
This paper reports on the Hubble space telescope. The telescope is expected to help answer key questions in astronomy, astrophysics, and cosmology, such as how stars and galaxies form and evolve; the size and age of the universe; the nature of quasars, black holes, and other exotic objects; the characteristics of planets in our solar system; and ...
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This paper reports on the Hubble space telescope. The telescope is expected to help answer key questions in astronomy, astrophysics, and cosmology, such as how stars and galaxies form and evolve; the size and age of the universe; the nature of quasars, black holes, and other exotic objects; the characteristics of planets in our solar system; and ...
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IMTC/99. Proceedings of the 16th IEEE Instrumentation and Measurement Technology Conference (Cat. No.99CH36309), 2003
The Hubble Space Telescope is one of the world's pre-eminent observatories. The scientific results from this telescope have already revolutionized our understanding of the Universe, have answered many key questions of modern astrophysics and just as important the Hubble Space Telescope has revealed a number of new phenomena now being investigated with ...
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The Hubble Space Telescope is one of the world's pre-eminent observatories. The scientific results from this telescope have already revolutionized our understanding of the Universe, have answered many key questions of modern astrophysics and just as important the Hubble Space Telescope has revealed a number of new phenomena now being investigated with ...
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Hubble Space Telescope overview
29th Aerospace Sciences Meeting, 1991A general overview of the performance and current status of the Hubble Space Telescope is presented. Most key spacecraft subsystems are operating well, equaling or exceeding specifications. Spacecraft thermal properties, power, and communications, are superb. The only spacecraft subsystem to have failed, a gyro, is briefly discussed.
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Hubble Space Telescope Contamination Analysis
SPIE Proceedings, 1987This paper summarizes the results of several contamination analyses performed in support of Hubble Space Telescope (HST) system development. The discussion topics encompass several flight-phase operational and contamination events: prelaunch standby, on-orbit closed-door and open-door operations, HST interior outgassing, and ram-induced pressure rise ...
Michael C. Fong +2 more
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Mining Hubble Space Telescope images
2017 International Joint Conference on Neural Networks (IJCNN), 2017Astrophysicists rely on crowd sourced initiatives to classify galaxies in large surveys. The next generation of telescopes will lead to a revolutionary increase in the amount of unlabelled data available to astrophysicists making crowd sourcing infeasible. To cope with this significant increase in data astrophysicists will need unsupervised techniques.
Alex Hocking +3 more
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1992
The EO galaxy M87 harbours the prototypical and most studied example of an optical jet. First observed by Curtis in 1918, it remained little more than a curiosity, until Baade and Minkowski studied it in 1954 and first used the term “jet” to describe the sequence of optical knots extending to about 20″ from the nucleus.
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The EO galaxy M87 harbours the prototypical and most studied example of an optical jet. First observed by Curtis in 1918, it remained little more than a curiosity, until Baade and Minkowski studied it in 1954 and first used the term “jet” to describe the sequence of optical knots extending to about 20″ from the nucleus.
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The Hubble Space Telescope Observatory
Physics Today, 1990No other astronomy project has taken so long to develop, proven so technologically challenging or cost so much as the Hubble Space Telescope. At a development cost of about $1.5 billion, the HST is big science by the standards of modern physics. Soon after the HST is launched on 12 April, the physics community will determine if the resources and ...
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Cosmology with the Laser Interferometer Space Antenna
Living Reviews in Relativity, 2023Germano Nardini
exaly