Robust, motion-free optical characterization of samples using actively-tunable Twyman–Green interferometry [PDF]
Scientific Reports, 2023 Optical interferometry-based techniques are ubiquitous in various measurement, imaging, calibration, metrological, and astronomical applications. Repeatability, simplicity, and reliability of measurements have ensured that interferometry in its various ...
Arjent Imeri, Syed Azer Reza
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Radio Astronomical Antennas in the Central African Region to Improve the Sampling Function of the VLBI Network in the SKA Era? [PDF]
Sensors, 2022 On the African continent, South Africa has world-class astronomical facilities for advanced radio astronomy research. With the advent of the Square Kilometre Array project in South Africa (SA SKA), six countries in Africa (SA SKA partner countries) have ...
Marcellin Atemkeng +4 more
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Non-reciprocity in photon polarization based on direction of polarizer under gravitational fields [PDF]
Scientific ReportsUnification of gravity with quantum mechanics is still a terra incognita. Photon polarization measurements offer a unique window for probing the interaction between these two fundamental forces.
Hansol Noh +3 more
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Cramér-Rao sensitivity limits for astronomical instruments: implications for interferometer design [PDF]
Journal of the Optical Society of America A, 2003 Multiple-telescope interferometry for high-angular-resolution astronomical imaging in the optical–IR–far-IR bands is currently a topic of great scientific interest.
Zmuidzinas, Jonas
core +4 more sources
Virgo and the gravitational interferometry [PDF]
EPJ Web of Conferences, 2023 The Advanced Virgo detector is a long scale enhanced Michelson interferometer placed in Italy, close to Pisa, with the aim of detecting gravitational waves from astronomical sources.
Mantovani Maddalena
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Computer Generated Holograms (CGH) for Testing, Alignment and Positioning of Astronomical and Space Mirrors Aspherical Surfaces [PDF]
EPJ Web of Conferences, 2019 JSC LZOS successfully applies Computer Generated Holograms (CGH) for testing of on- and off-axis surfaces of large-dimensioned optical components for their alignment with respect to interferometer, for defining of aspherical surface optical vertex ...
Semenov Aleksandr +7 more
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Imaging the Inner Astronomical Unit of the Herbig Be Star HD 190073
The Astrophysical Journal, 2023 The inner regions of protoplanetary disks host many complex physical processes such as star–disk interactions, magnetic fields, planet formation, and the migration of new planets.
Nour Ibrahim +15 more
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A linear formation-flying astronomical interferometer in low Earth orbit [PDF]
Publications of the Astronomical Society of Australia, 2020 Abstract Space interferometry is the inevitable end point of high angular resolution astrophysics, and a key technology that can be leveraged to analyse exoplanet formation and atmospheres with exceptional detail. However, the anticipated cost of large missions, such as Darwin and TPF-I, and inadequate technology readiness levels have resulted in ...
Jonah T. Hansen, Michael J. Ireland
openaire +2 more sources
Comparison of beam combiners for a synthetic aperture imaging telescope [PDF]
Journal of the European Optical Society-Rapid Publications, 2006 Future astronomical space missions will comprise a constellation of several optical telescopes to detect exo-planets by interferometric nulling of starlight.
van der Avoort Casper +3 more
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The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs
The Astronomical Journal, 2023 We present K -band (24 GHz) images of 731 compact extragalactic radio sources with submilliarcsecond resolution, based on radio interferometric observations made with the Very Long Baseline Array of 10 telescopes during 29 day long sessions spanning from
Aletha de Witt +6 more
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