Results 1 to 10 of about 51,201 (322)

Integrated optics for astronomical interferometry. I. Concept and astronomical applications [PDF]

open access: bronzeAstronomy and Astrophysics Supplement Series, 1999
We propose a new instrumental concept for long-baseline optical single-mode interferometry using integrated optics which were developed for telecommunication.
F. Malbet   +5 more
core   +5 more sources

Astronomical Imaging... Atmospheric Turbulence? Adaptive Optics! [PDF]

open access: greenEAS Publications Series, 2013
This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012. The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving
M. Carbillet
  +6 more sources

An Optimal Integral Controller for Adaptive Optics Systems [PDF]

open access: yesSensors, 2023
Integral controllers are commonly employed in astronomical adaptive optics. This work presents a novel tuning procedure for integral controllers in adaptive optics systems which relies on information about the measured disturbances. This tuning procedure
Pedro Escárate   +3 more
doaj   +2 more sources

Correction: Dou et al. Performance Calibration of the Wavefront Sensor’s EMCCD Detector for the Cool Planets Imaging Coronagraph Aboard CSST. J. Imaging 2025, 11, 203 [PDF]

open access: yesJournal of Imaging
The authors would like to make the following corrections to the published paper [...]
Jiangpei Dou   +7 more
doaj   +2 more sources

Performance Calibration of the Wavefront Sensor’s EMCCD Detector for the Cool Planets Imaging Coronagraph Aboard CSST [PDF]

open access: yesJournal of Imaging
The wavefront sensor (WFS), equipped with an electron-multiplying charge-coupled device (EMCCD) detector, is a critical component of the Cool Planets Imaging Coronagraph (CPI-C) on the Chinese Space Station Survey Telescope (CSST). Precise calibration of
Jiangpei Dou   +7 more
doaj   +2 more sources

Astronomical Tasks for Tests of X-Ray Optics in VZLUSAT-1 Nanosatellite [PDF]

open access: goldAdvances in Astronomy, 2017
VZLUSAT-1 nanosatellite (scheduled launch in spring 2017 from India) is a CubeSat mission which, besides other instrumentation, contains X-ray desk to perform efficiency tests of the X-ray optics.
Martin Blazek   +3 more
doaj   +2 more sources

Modern Astronomical Optics [PDF]

open access: bronzeNature, 1956
Proceedings of a Symposium on Astronomical Optics and Related Subjects Held in the University of Manchester, April 19th–22nd, 1955. Ed. by Prof. Zdenek Kopal. Pp. xv + 428. (Amsterdam: North-Holland Publishing Co.; New York: Interscience Publishers, Inc., 1956.) 45 guilders; 90s.
E. Finlay-Freundlich
openaire   +2 more sources

Integrated optics for astronomical interferometry - VI. Coupling the light of the VLTI in K band [PDF]

open access: green, 2005
Our objective is to prove that integrated optics (IO) is not only a good concept for astronomical interferometry but also a working technique with high performance.
A. Delboulbé   +32 more
core   +6 more sources

New Optics for Astronomical Polarimetry [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2014
AbstractThere is a variety of new polarization optics that can be employed for polarimetry and for polarization control. Many are enabled by new materials including polymers and liquid crystals. We survey here these and other relatively new devices and components available commercially that open new possibilities for astronomers.
Tom Baur
openaire   +2 more sources

Planar integrated optics and astronomical interferometry [PDF]

open access: greenComptes Rendus de l'Académie des Sciences - Series IV - Physics, 2001
Integrated optics (IO) is an optical technology that allows to reproduce optical circuits on a planar substrate. Since 1996, we have investigated the potentiality of IO in the framework of astronomical single mode interferometry. We review in this paper the principles of IO, the requirements for interferometry and the corresponding solutions offered by
Kern, Pierre   +4 more
openaire   +5 more sources

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