AstroGrid-D and GAVO

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AstroGrid-D and GAVO

• AstroGrid-D
• Infrastructure
• Network,
• Computing Resources
• Grid-Technology, Middleware
• GAVO
• Interoperability of archives and datasources
• Virtual Observatoy compatible
• Software
• Tools
• Database-Interfaces
• User-Interfaces

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GAVO AstroGrid-D
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GAVO Projects within the AstroGrid-D

• Goal
• Develop example and standard procedures to
  combine the typical process of data reduction and
  processing, using the AstroGrid-D and GAVO tools
  standards.

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RAVE

• Radial Velocity survey, collecting stellar
  spectra of 1 Mio local stars to measure radial
  velocity, metallicity and abundance ratios.
• Website running, data base growning continously.
  Currently only photometric data available.

• GAVO Projects
• Necessary technical updates of already running
  VOTable webservice (switch to JDBC)
• Enlarge data base to include rave spectra
  internally / for public use
• Decide about VO standard protocol for spectra
  SDM (spectral data model) versus SSA (simple
  spectrum access) for RAVE data
• Use the AstroGrid-D to execute the RAVE data
  reduction pipeline
• Use synergy with the GAIA satellite project

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Robotic Telescopes

• Automated data retrieval and storage of raw data
• Data reduction using the grid, reduced data
  stored in VO compliant data base
• Analyse and evaluate reduced data using VO tools
• RTML - RDF translation as first step for resource
  integration of RT into the Grid
• Develop interface to enable astronomer to easily
  specify new targets (for RT) using VO standards
  and tools
• Later event-triggered observations with RT (
  VOEvent )

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More Projects

• Implement simple data distribution methods for
  the common case of serialized data reduction
  using the grid
• Add simple access interfaces for VO compliant
  publishing of reduced data by individual
  astronomers
• Simplify publishing of single, ground based
  observations Solar regions, spectra of bright
  stars. Increase amount of comparible data in
  these fields
• LOFAR Solar Science Data Center at AIP
• GlowGrid Event based observations with remote
  LOFAR stations

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E3D - Archives
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E3D - Archives

• MetaData-Description
• E3D-data are stored in FITS-Format
• Fits contains a WCS-description suitable for
  VO-Table COOSYS-Array
• Problem WCS in the fits-file
• refers to the AG, ie the Telescope, not to the
• objects in the cube
• Problem the IFU normally have different
  characteristics, those are (afaik) not stored in
  the E3D-format
• E3D-fits-files are supposed to have
  instrument-characteristics removed via processing
  the raw data
• Still to be defined error-margins for processed
  data

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E3D - Archives

• MetaData VOTable-Conversion
• (aside of WCS-issue)
• VOTable has no notion of spaxels
• standard conversion tool for FITS-Header to
  VOTable-Header (aka MetaData) still missing
• Standard set of MetaData for E3D to be defined
• E3D-fits-file can be included into VOTable
• as a binary-tag (Is this what is desired?)

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E3D - Tool and Archives

• E3D-Archives
• Basic features
• ConeSearch
• Metadata-Description
• VOTable-Conversion
• Advanced Features
• Spectrum-Extraction
• SED-Creation
• Slicing

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E3D-Tool Features

• main window

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E3D-Tool Features

• I/O
• read write E3D
• read write RSS (row stacked spectra)
• read write CUBE
• import export slit-spectra
• export wavelength-cuts of RSS

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E3D-Tool Features

• spaxel-inspector
• visualisation of previously selected slices of
  the datacube
• (single or hash of spaxels)
• plots intensity statistics (relative to
  selection)
• Allows spectra-inspector to plot spectra of
  selected spaxels