Results 41 to 50 of about 1,120,334 (339)
Atmosphere, 2021 A two-month sampling campaign was carried out from 1 November to 30 December 2019, to investigate the light absorption of aerosols at coastal sites in Qingdao.
Jie Chen +7 more
doaj +1 more source
Atmospheric coherence times in interferometry: definition and measurement [PDF]
, 2006 Current and future ground-based interferometers require knowledge of the atmospheric time constant t_0, but this parameter has diverse definitions. Moreover, adequate techniques for monitoring t_0 still have to be implemented.
A. Kellerer +18 more
core +2 more sources
Fourier domain preconditioned conjugate gradient algorithm for atmospheric tomography [PDF]
, 2006 By 'atmospheric tomography' we mean the estimation of a layered atmospheric turbulence profile from measurements of the pupil-plane phase (or phase gradients) corresponding to several different guide star directions.
Ellerbroek, Brent L. +2 more
core +1 more source
Ground-layer wavefront reconstruction from multiple natural guide stars [PDF]
, 2007 Observational tests of ground layer wavefront recovery have been made in open loop using a constellation of four natural guide stars at the 1.55 m Kuiper telescope in Arizona.
Athey A. +17 more
core +3 more sources
Scientific Reports, 2018 The performance of free-space optics communication (FSOC) is greatly degraded by atmospheric turbulence. Adaptive optics (AO) is an effective method for attenuating the influence.
Yukun Wang +9 more
semanticscholar +1 more source
Optics Express, 2019 Development of major optical projects demands great amounts of freeform optics, which requires mass-production technology. The atmospheric pressure plasma processing (APPP) based on chemical etching shows the advantage of high efficiency in form ...
Xing Su +7 more
semanticscholar +1 more source
Adaptive Optics for Extremely Large Telescopes
, 2019 Adaptive Optics has become a key technology for the largest ground-based telescopes currently under or close to begin of construction. Adaptive optics is an indispensable component and has basically only one task, that is to operate the telescope at its ...
Hippler, Stefan
core +1 more source
Integrated Laboratory Demonstrations of Multi-Object Adaptive Optics on a Simulated 10-Meter Telescope at Visible Wavelengths [PDF]
, 2009 One important frontier for astronomical adaptive optics (AO) involves methods such as Multi-Object AO and Multi-Conjugate AO that have the potential to give a significantly larger field of view than conventional AO techniques.
Ammons, S. Mark +6 more
core +1 more source
Applied Optics, 2023 The Laser Communications Relay Demonstration is NASA's multi-year demonstration of laser communication from the Earth to a geosynchronous satellite. The mission currently has two optical ground stations (OGSs), with one in California (OGS1) and one in ...
L. Roberts +10 more
semanticscholar +1 more source
Atmosphere, 2021 A high sensitivity wavelength modulated reinjection off-axis integrated cavity output spectroscopy (WM-RE-OA-ICOS) experimental setup was built at a 2 μm band. On the basis of an off-axis integrated output spectroscopy (OA-ICOS), combined with an optical
Zihao Yuan +6 more
doaj +1 more source