Results 31 to 40 of about 10,502,106 (355)
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
doaj +1 more source
Science highlights from the Fermi Large Area Telescope [PDF]
, 2011 During its first three years of operation, the Fermi Gamma-ray Space Telescope has provided an unprecedented view of the high energy gamma-ray sky, and also performed direct measurements of the cosmic-ray leptons and searches for signals from dark matter.
Baldini, L., Tibaldo, L.
core +2 more sources
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
doaj +1 more source
GLAST, the Gamma-ray Large Area Space Telescope [PDF]
, 2000 GLAST, a detector for cosmic gamma rays in the range from 20 MeV to 300 GeV, will be launched in space in 2005. Breakthroughs are expected in particular in the study of particle acceleration mechanisms in space and of gamma ray bursts, and maybe on the ...
de Angelis, Alessandro
core +3 more sources
Instrumentation for ESO's Extremely Large Telescope [PDF]
Astronomical Telescopes + Instrumentation, 2018 In this paper we will report on the status of the instrumentation project for the European Southern Observatory's Extremely Large Telescope (ELT). Three instruments are in the construction phase: HARMONI, MICADO and METIS.
S. Ramsay +26 more
semanticscholar +1 more source
International Journal of Antennas and Propagation, 2020 The purpose of this paper is to investigate a large radio telescope support point number effect on its pointing accuracy and provide a useful guideline for the large radio telescope design engineer. In a large radio telescope system, the azimuth track is
Song Xue +8 more
doaj +1 more source
One Novel Distributed Space Telescope With Payload Formation
IEEE Access, 2020 Large aperture space technology is critical for next-step astrophysics missions with high resolution requirement. The distributed telescope has been proven as an appealing solution to break the technical limitation in obtaining large apertures.
Qing Li, Lei Liu, Jun Shen
doaj +1 more source
Plans for a 10-m Submillimeter-wave Telescope at the South Pole [PDF]
, 1998 A 10 meter diameter submillimeter-wave telescope has been proposed for the NSF Amundsen-Scott South Pole Station. Current evidence indicates that the South Pole is the best submillimeter-wave telescope site among all existing or proposed ground-based ...
Carlstrom, John E. +7 more
core +3 more sources
The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope [PDF]
Astrophysical Journal, 2019 The fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (4LAC) between 2008 August 4 and 2016 August 2 contains objects located at high Galactic latitudes ( ).
M. Ajello +117 more
semanticscholar +1 more source
Millimeter/Submillimeter VLBI with a Next Generation Large Radio Telescope in the Atacama Desert
Galaxies, 2022 The proposed next generation Event Horizon Telescope (ngEHT) concept envisions the imaging of various astronomical sources on scales of microarcseconds in unprecedented detail with at least two orders of magnitude improvement in the image dynamic ranges ...
Kazunori Akiyama +5 more
doaj +1 more source