Results 11 to 20 of about 411,045 (265)
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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Optical Design of a Novel Wide-Field-of-View Space-Based Spectrometer for Climate Monitoring
Sensors, 2022 We report on a near-infrared imaging spectrometer for sensing the three most prominent greenhouse gases in the atmosphere (water vapor, carbon dioxide and methane).
Luca Schifano +3 more
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Receiving vectors of muon telescope of cosmic ray station Novosibirsk
Solar-Terrestrial Physics, 2016 The method of receiving vectors allows us to determine cosmic ray anisotropy at every moment of time. Also, the method makes it possible to study fast anisotropy fluctuations related to the interplanetary medium dynamics.
Yanchukovsky V.L. +4 more
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Wishing for the Watch Face in Jonathan Swift’s “The Progress of Beauty”
ABO : Interactive Journal for Women in the Arts 1640-1830, 2018 This article illuminates the technological underpinnings of Jonathan Swift’s satire, “The Progress of Beauty” (1719), by exploring how eighteenth-century poetics of beauty and scientific progress pit human against automaton.
Jantina Ellens
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Building a CCD Spectrograph for Educational or Amateur Astronomy [PDF]
, 2002 We discuss the design of an inexpensive, high-throughput CCD spectrograph for a small telescope. By using optical fibers to carry the light from the telescope focus to a table-top spectrograph, one can minimize the weight carried by the telescope and ...
Charles B. Hughes +4 more
core +1 more source
Comparative analysis of three mode-selection methods for solid-state lasers [PDF]
E3S Web of Conferences, 2021 In the Nd3+:YAG pulsed Q-switched laser system, the selective output of several low order modes of TEM00, TEM01 and TEM11 is realized by adding a iris diaphragm, a telescope or a Gaussian mirror at an appropriate position in the resonator, and the three ...
Sun Yan
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Low Vision Aids: Visual Outcomes and Barriers in Children with Low Vision
Delhi Journal of Ophthalmology, 2019 Aims: To study the demographic profile, cause of low vision, visual outcome and the barriers in using low vision aids (LVA). Design: Prospective observational clinical study.
V. R. Venkataramanan +5 more
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Active optics: deformable mirrors with a minimum number of actuators [PDF]
Journal of the European Optical Society-Rapid Publications, 2012 We present two concepts of deformable mirror to compensate for first order optical aberrations. Deformation systems are designed using both elasticity theory and Finite Element Analysis in order to minimize the number of actuators.
Laslandes M., Hugot E., Ferrari M.
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Atmosphere, 2021 A method to detect the atmospheric turbulent layers using a single Shack–Hartmann wavefront sensor is discussed. In order to determine the height distribution of the atmospheric turbulence above a telescope, we register the wavefront distortions at ...
Artem Yurievich Shikhovtsev +6 more
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Extragalactic HI Surveys at Arecibo: the Future [PDF]
, 2008 Starting in the 1970s, the Arecibo 305m telescope has made seminal contributions in the field of extragalactic spectroscopy. With the Gregorian upgrade completed in the late 1990s, the telescope acquired a field of view.
Emmanuel Momjian +2 more
core +2 more sources