  IN-FLIGHT PERFORMANCE OF THE SOLAR UV RADIOMETER LYRA / PROBA-2Stockman, Yvan  ; Defise, Jean-Marc ; Halain, Jean-Philippe et al(2010, October 05) LYRA is a solar radiometer, part of the PROBA-2 micro-satellite payload. The PROBA-2 mission has been launched on 02 November 2009 with a Rockot launcher to a Sun-synchronous orbit at an altitude of 725 ... [more ▼] LYRA is a solar radiometer, part of the PROBA-2 micro-satellite payload. The PROBA-2 mission has been launched on 02 November 2009 with a Rockot launcher to a Sun-synchronous orbit at an altitude of 725 km. Its nominal operation duration is two years with possible extension of 2 years. LYRA monitors the solar irradiance at a high cadence (> 20Hz) in four soft X-Ray to VUV large passbands: the “Lyman-Alpha” channel, the “Herzberg” continuum range, the “Aluminium” and “Zirconium” filter channels. The radiometric calibration is traceable to synchrotron source standards. LYRA benefits from wide bandgap detectors based on diamond. It is the first space assessment of these revolutionary UV detectors for astrophysics. [less ▲] Detailed reference viewed: 21 (1 ULg) Pre-flight calibration of LYRA, the solar VUV radiometer on board PROBA2; ; et al in Astronomy and Astrophysics (2009), 508(2), 1085-1094 Aims. LYRA, the Large Yield Radiometer, is a vacuum ultraviolet (VUV) solar radiometer, planned to be launched in November 2009 on the European Space Agency PROBA2, the Project for On-Board Autonomy ... [more ▼] Aims. LYRA, the Large Yield Radiometer, is a vacuum ultraviolet (VUV) solar radiometer, planned to be launched in November 2009 on the European Space Agency PROBA2, the Project for On-Board Autonomy spacecraft. Methods: The instrument was radiometrically calibrated in the radiometry laboratory of the Physikalisch-Technische Bundesanstalt (PTB) at the Berlin Electron Storage ring for SYnchroton radiation (BESSY II). The calibration was done using monochromatized synchrotron radiation at PTB's VUV and soft X-ray radiometry beamlines using reference detectors calibrated with the help of an electrical substitution radiometer as the primary detector standard.<BR /> Results: A total relative uncertainty of the radiometric calibration of the LYRA instrument between 1 and 11 was achieved. LYRA will provide irradiance data of the Sun in four UV passbands and with high temporal resolution down to 10 ms. The present state of the LYRA pre-flight calibration is presented as well as the expected instrument performance. [less ▲] Detailed reference viewed: 94 (10 ULg)Le Projet OSIRIS (Optical Systems for Interferometric Relief Investigation and Scanning). Projet de développement d'un système de relevé numérique des documents archéologiques en trois dimensions par des procédés optoélectroniquesLaboury, Dimitri ; Renotte, Yvon ; et alin L'archéométrie au service des monuments et des livres d'art (2003) Detailed reference viewed: 60 (6 ULg)The OSIRIS Project (Optical Systems for Interferometric-Photogrammetric Relief Investigation and Scanning). Development of a device for 3D numerical recording of archaeological and epigraphic documents by optoelectronic processesLaboury, Dimitri ; Renotte, Yvon ; et alin Boehler, Wolfgang (Ed.) PROCEEDINGS OF THE CIPA WG 6 INTERNATIONAL WORKSHOP ON SCANNING FOR CULTURAL HERITAGE RECORDING (2002, September) Detailed reference viewed: 77 (8 ULg) The OSIRIS Project (Optical Systems for Interferometric-Photogrammetric Relief Investigation and scanning), Development of a device for 3D numerical recording of archaeological and epigraphic documents by optoelectronic processesLaboury, Dimitri ; Renotte, Yvon ; et alin Proceedings of the CIPA WG6 international workshop on Scanning for Cultural Heritage Recording (2002) Detailed reference viewed: 53 (12 ULg)Développement d'un système de relevé numérique des documents archéologiques en trois dimensions par des procédés optoélectroniques; ; et al Poster (2001, November) Detailed reference viewed: 17 (0 ULg) |
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