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On SOHO [Solar and Heliospheric Observatory] the prime instruments required to provide the necessary constraints in order to advance our understanding of the coronal heating include, the Coronal Diagnostic Spectrometer(CDS), the Solar Ultraviolet Measurement of Emitted Radiation(SUMER), and the Extreme Ultraviolet Imaging Telescope(EIT).  3, record 1, English, - solar%20ultraviolet%20measurement%20of%20emitted%20radiation

Record 1,  Textual support,  French

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Record 2,  Textual support,  English

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The resolution of an optical imaging system – a microscope, telescope, or camera – can be limited by factors such as imperfections in the lenses or misalignment. However, there is a fundamental maximum to the resolution of any optical system which is due to diffraction. An optical system with the ability to produce images with angular resolution as good as the instrument's theoretical limit is said to be diffraction limited.  2, record 2, English, - diffraction%20limited

Record 2,  Textual support,  French

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En optique ondulatoire, un système idéal imageant parfaitement un point objet n'est limité que par la diffraction, c'est-à-dire que seule la diffraction intervient et que les aberrations ne déforment pas le front d'onde.  2, record 2, French, - limit%C3%A9%20par%20la%20diffraction

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Limite de diffraction – Les instruments optiques contiennent le plus souvent une chambre noire. La lumière passant par l'ouverture de la chambre noire subit une diffraction. Or la diffraction limite le pouvoir de résolution des instruments optiques : un objet ponctuel donne une image «floue», appelée tache de diffraction. Si deux détails d'un objet sont trop proches, les taches de diffraction se chevauchent et il devient impossible d'obtenir des images séparées de ces détails.  3, record 2, French, - limit%C3%A9%20par%20la%20diffraction

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Record 3,  Textual support,  English

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The Near Infrared Camera and Multi-Object Spectrometer(NICMOS) is a second-generation instrument to be installed on the Hubble Space Telescope(HST) during the February 13, 1997 on-orbit servicing mission. NICMOS will provide infrared imaging and spectroscopic observations of astronomical targets in the spectral range 0. 8-2. 5 microns.  2, record 3, English, - near%2Dinfrared%20camera%20and%20multi%2Dobject%20spectrometer

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La campagne d'observation à l'aide de l'instrument NICMOS (caméra dans le proche infrarouge et spectromètre à objets multiples), au cours de laquelle on a utilisé le miroir secondaire du télescope pour obtenir une mise au point optimale de la caméra n° 3, a été conduite avec succès en janvier.  2, record 3, French, - cam%C3%A9ra%20dans%20le%20proche%20infrarouge%20et%20spectrom%C3%A8tre%20%C3%A0%20objets%20multiples

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Record 4,  Textual support,  English

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Standoff radiation imaging detector. A sensor for detecting the radio-luminescence created by radioactive sources includes a telescope, a plurality of UV [ultra-violet] sensitive cameras, and an optical system in the optical path of the telescope for directing images to the cameras.  1, record 4, English, - standoff%20radiation%20imaging%20detector

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Record 5,  Textual support,  English

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The ASTRO Observatory had three primary instruments : the Ultraviolet Imaging Telescope(UIT), the Hopkins Ultraviolet Telescope(HUT) and the Wisconsin Ultraviolet Photo-Polarimeter Experiment(WUPPE). The Astro Observatory was designed to use many of the spacelab components and flew on two different shuttle flights. The first Astro flight was on December 2-11, 1990, aboard the shuttle Columbia. The X-ray experiment Broad Band X-Ray Telescope(BBXRT) was also part of the Astro-1 flight. The second flight was on March 2-18, 1995, aboard the shuttle Endeavour.  2, record 5, English, - Astro%20observatory

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Record 6,  Textual support,  English

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The Imaging Compton Telescope(COMPTEL) utilizes the Compton Effect and two layers of gamma-ray detectors to reconstruct an image of a gamma-ray source in the energy range 1 to 30 million electron volts(MeV). Gamma rays from active galaxies, radioactive supernova remnants, and diffuse gamma rays from giant molecular clouds can be studied with this instrument.  2, record 6, English, - imaging%20Compton%20telescope

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Record 8,  Textual support,  English

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Therefore, in such kind of telescopes, the background rejection technique needs signals with intensity much higher than the noise fluctuations with consequent increase of the telescope energy threshold. For example, Whipple with a mirror of 10 meter diameter can perform the imaging background rejection technique only on images with at least 300-400 photoelectrons.  2, record 8, English, - background%20rejection

Record 8,  Textual support,  French

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Ce système est chargé de collecter toutes les informations venant du réseau et des télescopes à fluorescence, de décider des événements physiques à garder parmi un énorme «bruit», de les distribuer à des sites «miroir» répartis sur les divers continents, d'établir des diagnostics en cas de problèmes de fonctionnement etc... Le groupe a défini l'architecture du système d'acquisition central; il prépare l'ensemble des logiciels fonctionnant en ligne et hors-ligne, le système de déclenchement central du réseau qui conditionne la sélection des événements et l'élimination du bruit de fond ainsi que l'interface cage avec le détecteur optique.  2, record 8, French, - %C3%A9limination%20du%20bruit%20de%20fond

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Record 9,  Textual support,  English

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The Space Telescope Imaging Spectrograph(STIS) is currently being developed for in-orbit installation onto the Hubble Space Telescope(HST)... STIS will also feature high spatial resolution camera modes, suitable for autonomous target acquisition as well as scientific imaging.  2, record 9, English, - space%20telescope%20imaging%20spectrograph

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Record 10,  Textual support,  English

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Solar-B's broad objective is to allow the solar photosphere and corona to be understood as a system. Its payload consists of three instruments : a 0. 5m solar optical telescope, an EUV imaging spectrometer(EIS) and an X-ray/EUV telescope.  3, record 10, English, - solar%20optical%20telescope

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Record 12,  Textual support,  English

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The LLT is visualized as a 16-m Ultraviolet/Visible/Infrared imaging, optical telescope, operating in the spectral range of 0. 1-10 mm. The LLT Project should be rooted in the accumulated experience in lunar-based science, technology, design, engineering, operations, and management acquired with testbeds and precursor telescopes during the early 2000s.  2, record 12, English, - large%20lunar%20telescope

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Record 13,  Textual support,  English

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A new research programme in optical astronomy was started based on observations of extremely faint extragalactic objects using an imaging photon counting system similar to that being developed for the Space Telescope.  1, record 13, English, - imaging%20photon%20counting%20system

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