32 research outputs found

    The GIRAFFE Archive : Database and VO access

    No full text
    International audienceGIRAFFE is an intermediate and high resolution multi-fibre spectrograph installed at VLT/UT2 (ESO) since 2003. It produces 1D spectra in its multi-object configuration and 3D spectra using its integral field unit configurations. The raw data collected by the instrument (science and calibrations) are part of the ESO archive (<a href='http://archive.eso.org'>http://archive.eso.org</a>). The GIRAFFE Archive, developed in Paris Observatory, provides reduced spectra from the observations made by the instrument once they are publicly available. These spectra are automatically reduced using the ESO GIRAFFE data reduction pipeline. The reduced spectra can be accessed via the web interface of the database (<a href='http://giraffe-archive.obspm.fr'>http://giraffe-archive.obspm.fr</a>), which offers a large range of selection criteria, including individual target positions, magnitudes, signal-to-noise ratios, together with an interactive quick look of the reduced spectra. They also can be accessed in the Virtual Observatory via the SSA web service of VO-Paris Data Centre (<a href='http://voparis-srv.obspm.fr/portal/'>http://voparis-srv.obspm.fr/portal/</a>). Two collections are available in the VO: the 1D spectra (summed in the case of integral field observations) and the 3D field observations. These latter products can be explored using the VO Paris Euro3D Client (<a href='http://voplus.obspm.fr/ chil/Euro3D/'>http://voplus.obspm.fr/ chil/Euro3D/</a>)

    Control and protection of outdoor embedded camera for astronomy

    No full text
    International audienceThe purpose of CABERNET- Podet-Met (CAmera BEtter Resolution NETwork, Pole sur la Dynamique de l'Environnement Terrestre - Meteor) project is the automated observation, by triangulation with three cameras, of meteor showers to perform a calculation of meteoroids trajectory and velocity. The scientific goal is to search the parent body, comet or asteroid, for each observed meteor. To install outdoor cameras in order to perform astronomy measurements for several years with high reliability requires a very specific design for the box. For these cameras, this contribution shows how we fulfilled the various functions of their boxes, such as cooling of the CCD, heating to melt snow and ice, the protecting against moisture, lightning and Solar light. We present the principal and secondary functions, the product breakdown structure, the technical solutions evaluation grid of criteria, the adopted technology products and their implementation in multifunction subsets for miniaturization purpose. To manage this project, we aim to get the lowest manpower and development time for every part. In appendix, we present the measurements the image quality evolution during the CCD cooling, and some pictures of the prototype

    Control and protection of outdoor embedded camera for astronomy

    No full text
    International audienceThe purpose of CABERNET- Podet-Met (CAmera BEtter Resolution NETwork, Pole sur la Dynamique de l'Environnement Terrestre - Meteor) project is the automated observation, by triangulation with three cameras, of meteor showers to perform a calculation of meteoroids trajectory and velocity. The scientific goal is to search the parent body, comet or asteroid, for each observed meteor. To install outdoor cameras in order to perform astronomy measurements for several years with high reliability requires a very specific design for the box. For these cameras, this contribution shows how we fulfilled the various functions of their boxes, such as cooling of the CCD, heating to melt snow and ice, the protecting against moisture, lightning and Solar light. We present the principal and secondary functions, the product breakdown structure, the technical solutions evaluation grid of criteria, the adopted technology products and their implementation in multifunction subsets for miniaturization purpose. To manage this project, we aim to get the lowest manpower and development time for every part. In appendix, we present the measurements the image quality evolution during the CCD cooling, and some pictures of the prototype

    The GIRAFFE Archive : Database and VO access

    No full text
    International audienceGIRAFFE is an intermediate and high resolution multi-fibre spectrograph installed at VLT/UT2 (ESO) since 2003. It produces 1D spectra in its multi-object configuration and 3D spectra using its integral field unit configurations. The raw data collected by the instrument (science and calibrations) are part of the ESO archive (<a href='http://archive.eso.org'>http://archive.eso.org</a>). The GIRAFFE Archive, developed in Paris Observatory, provides reduced spectra from the observations made by the instrument once they are publicly available. These spectra are automatically reduced using the ESO GIRAFFE data reduction pipeline. The reduced spectra can be accessed via the web interface of the database (<a href='http://giraffe-archive.obspm.fr'>http://giraffe-archive.obspm.fr</a>), which offers a large range of selection criteria, including individual target positions, magnitudes, signal-to-noise ratios, together with an interactive quick look of the reduced spectra. They also can be accessed in the Virtual Observatory via the SSA web service of VO-Paris Data Centre (<a href='http://voparis-srv.obspm.fr/portal/'>http://voparis-srv.obspm.fr/portal/</a>). Two collections are available in the VO: the 1D spectra (summed in the case of integral field observations) and the 3D field observations. These latter products can be explored using the VO Paris Euro3D Client (<a href='http://voplus.obspm.fr/ chil/Euro3D/'>http://voplus.obspm.fr/ chil/Euro3D/</a>)

    3D Kinematics of Local Galaxies and Fabry-Perot Database

    No full text
    International audienceNot Availabl

    The GIRAFFE Archive: 1D and 3D Spectra

    No full text
    International audienceThe GIRAFFE Archive (<a href='http://giraffe-archive.obspm.fr'>http://giraffe-archive.obspm.fr</a>) contains the reduced spectra observed with the intermediate and high resolution multi-fiber spectrograph installed at VLT/UT2 (ESO). In its multi-object configuration and the different integral field unit configurations, GIRAFFE produces 1D spectra and 3D spectra. We present here the status of the archive and the different functionalities to select and download both 1D and 3D data products, as well as the present content. The two collections are available in the VO: the 1D spectra (summed in the case of integral field observations) and the 3D field observations. These latter products can be explored using the VO Paris Euro3D Client (<a href='http://voplus.obspm.fr/ chil/Euro3D'>http://voplus.obspm.fr/ chil/Euro3D</a>)

    The GIRAFFE Archive: 1D and 3D Spectra

    No full text
    International audienceThe GIRAFFE Archive (<a href='http://giraffe-archive.obspm.fr'>http://giraffe-archive.obspm.fr</a>) contains the reduced spectra observed with the intermediate and high resolution multi-fiber spectrograph installed at VLT/UT2 (ESO). In its multi-object configuration and the different integral field unit configurations, GIRAFFE produces 1D spectra and 3D spectra. We present here the status of the archive and the different functionalities to select and download both 1D and 3D data products, as well as the present content. The two collections are available in the VO: the 1D spectra (summed in the case of integral field observations) and the 3D field observations. These latter products can be explored using the VO Paris Euro3D Client (<a href='http://voplus.obspm.fr/ chil/Euro3D'>http://voplus.obspm.fr/ chil/Euro3D</a>)

    An innovative telescope control system architecture for SST-GATE telescopes at the CTA Observatory

    No full text
    International audienceSST-GATE (Small Size Telescope - GAmma-ray Telescope Elements) is a 4-metre telescope designed as a prototype for the Small Size Telescopes (SST) of the Cherenkov Telescope Array (CTA), a major facility for the very high energy gamma-ray astronomy of the next three decades. In this 100-telescope array there will be 70 SSTs, involving a design with an industrial view aiming at long-term service, low maintenance effort and reduced costs. More than a prototype, SST-GATE is also a fully functional telescope that shall be usable by scientists and students at the Observatoire de Meudon for 30 years. The Telescope Control System (TCS) is designed to work either as an element of a large array driven by an array controller or in a stand-alone mode with a remote workstation. Hence it is built to be autonomous with versatile interfacing; as an example, pointing and tracking ---the main functions of the telescope--- are managed onboard, including astronomical transformations, geometrical transformations (e.g. telescope bending model) and drive control. The core hardware is a CompactRIO (cRIO) featuring a real-time operating system and an FPGA. In this paper, we present an overview of the current status of the TCS. We especially focus on three items: the pointing computation implemented in the FPGA of the cRIO ---using CORDIC algorithms--- since it enables an optimisation of the hardware resources; data flow management based on OPCUA with its specific implementation on the cRIO; and the use of an EtherCAT field-bus for its ability to provide real-time data exchanges with the sensors and actuators distributed throughout the telescope

    The GIRAFFE Archive: 1D and 3D Spectra

    No full text
    International audienceThe GIRAFFE Archive (<a href='http://giraffe-archive.obspm.fr'>http://giraffe-archive.obspm.fr</a>) contains the reduced spectra observed with the intermediate and high resolution multi-fiber spectrograph installed at VLT/UT2 (ESO). In its multi-object configuration and the different integral field unit configurations, GIRAFFE produces 1D spectra and 3D spectra. We present here the status of the archive and the different functionalities to select and download both 1D and 3D data products, as well as the present content. The two collections are available in the VO: the 1D spectra (summed in the case of integral field observations) and the 3D field observations. These latter products can be explored using the VO Paris Euro3D Client (<a href='http://voplus.obspm.fr/ chil/Euro3D'>http://voplus.obspm.fr/ chil/Euro3D</a>)

    MIGALE: A Multiparametric Virtual Instrument to Study Galaxy Evolution

    No full text
    International audienceMIGALE proposes to build the Virtual Instruments needed to study the evolution from z=1 to the Local Universe. In particular it will address aspects related to the evolution of the SFR, of the morphology and of the history of the stellar populations. MIGALE will succeed to HyperLeda and continue to distribute homogeneous data for million of galaxies, reference data as for example spectra of stars and galaxies and ont-the-fly processing tools. In addition it will provide specific tools for analysing the data from the Giraffe spectrograph (VLT). We will present here a demonstration of the tools yet available on-line and discuss of the future developments
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