Results 11 to 20 of about 43,863 (306)
Broadband multi-wavelength properties of M87 during the 2017 Event Horizon Telescope campaign
, 2021 In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting ...
The Event Horizon Telescope Collaboration
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Scientific Impact of Large Telescopes [PDF]
Publications of the Astronomical Society of the Pacific, 2001 The scientific impacts of telescopes worldwide have been compared on the basis of their contributions to (a) the 1000 most-cited astronomy papers published 1991-8 (125 from each year), and (b) the 452 astronomy papers published in Nature 1989-98.
Benn, C. R., Sanchez, S. F.
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Nautilus: The advent of large lens-based space telescopes [PDF]
EPJ Web of Conferences, 2022 One of the most profound and philosophically captivating foci of modern astronomy is studies of Earth-like exoplanets in search of life in the Universe.
Kim Daewook +2 more
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wakaka1o1/Active-Vibration-Control-of-a-Large-Space-Telescope: The First release of my paper code
, 2023 <p>"Active Vibration Control of a Large Space Telescope Based On H∞ Control With Unilateral and Constrained Input" part1:Dynamic modeling</p ...
YU, Heng
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Observing CVs and LMXBs with SALT: Updates and Recent Results
Acta Polytechnica CTU Proceedings, 2015 I present an overview of the ongoing observational programs utilizing the Southern African Large Telescope (SALT), focussing on magnetic Cataclysmic Variables and Low Mass X-ray Binaries.
David A. H. Buckley
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Photonics Large-Survey Telescope Internal Motion Metrology System
Photonics, 2023 Large survey telescopes are vital for mapping dark energy and dark matter in the deep universe. This study presents a fiber-linked internal motion metrology system that aligns the mirrors and large lenses in the telescopes to enhance alignment accuracy ...
Qichang An +5 more
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Wind buffeting of large telescopes [PDF]
Applied Optics, 2010 Unsteady wind loads due to turbulence within the telescope enclosure are one of the largest dynamic disturbances for ground-based optical telescopes. The desire to minimize the response to the wind influences the design of the telescope enclosure, structure, and control systems.
MacMynowski, Douglas G. +1 more
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Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data
Solar-Terrestrial Physics, 2022 The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y. +5 more
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Grinding metre scale mirror segments for the E-ELT ground based telescope [PDF]
, 2011 The next generation of ground based telescopes require many hundreds of metre scale off-axis mirrors. In this paper the grinding of a 1.45m scale Zerodur® mirror segment for the European Extremely Large Telescope (E-ELT) is introduced.
P. Shore +7 more
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Fast figuring of large optics by reactive atom plasma [PDF]
, 2012 The next generation of ground-based astronomical observatories will require fabrication and maintenance of extremely large segmented mirrors tens of meters in diameter.
Renaud Jourdain +7 more
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