Dear Colleagues,
I am pleased to announce Beta release of the ASPID-SR VO-Enabled data archive. ASPID-SR stands for "Archive of Spectral, Photometric, and Interferometric Data". SR means "science ready". It contains data coming from selected instruments of the Russian 6-m telescope (BTA, SAO RAS) built in the Laboratory of Spectroscopy and Photometry of Extragalactic Objects (LSPEO SAO RAS). Present release is made mainly to demonstrate how Virtual Observatory data models (Characterisation DM, Spectral DM) and protocols (PLASTIC) can be used to achieve interoperability between the archive, providing complex datasets, and client software (CDS Aladin, ESA VOSpec, VO-Paris EuroVO Client).
ASPID-SR search interface is available here: http://alcor.sao.ru/php/aspid-sr/
To enjoy the complete functionality of the archive, you may need to run additional VO applications. Click on the link "Start VO Tools" on the top of the search page for details.
At present, ASPID-SR provides access to about 500 datasets: 3D spectral data coming from the MPFS IFU spectrograph and low- and intermediate-resolution long-slit spectra obtained with the SCORPIO universal spectrograph.
This project is a collaborative effort.
Our team comprises (alphabetical order):
* Victor Afanasiev (LSPEO SAO RAS, Russia) - data provider
We are grateful to prompt reaction and efficient user support provided by the ESA VOSpec team in Madrid and CDS Aladin team in Strasbourg, and to Nikolay Samokhvalov (Moscow) for solving our PgXML problems.
Your feedback is very welcome. The web-interface is not well tested under anything else than Mozilla-Firefox.
Our plans for the nearest future (before Beijing interop): improving documentation :), SSAP access for integrated and extracted spectra, release of several dozens of Fabry-Perot H-alpha datacubes for nearby galaxies, improving Aladin scripting for preview images.
Technical details:
ASPID-SR completely implements IVOA Characterisation Data Model. For every dataset we provide full Characterisation metadata. These metadata are stored as native XML in the database and queried directly from the WEB-interface: user input is translated into XML XPath and then used to constraint SQL query. The backend is based on the XMLType support for PostgreSQL implemented by Nikolay Samokhvalov, MIPT (Google Summer of Code 2006).
In order to use interactive features of our archive, you will need Java(1.5+)- and JavaScript-enabled web browser, and (strongly recommended) Java Web-Start. Interaction is done by an invisible Java applet (aspidapplet) which is attached to every page containing query results. "aspidapplet" interacts via PLASTIC messages with VO-Paris Euro3D Client and CDS Aladin.
CDS Aladin is used to display location of spectrograph's slit or IFU micro-lenses overimposed on the DSS2 image. PLASTIC hub, implemented in Aladin is used by other applications and web-pages of the archive to intercommunicate.
Handling Euro3D FITS format is done by using a dedicated software, VO-Paris Euro3D Client, an open source Java software, developed by Igor Chilingarian, implementing PLASTIC messaging for interacting with CDS Aladin (bi-directional) and ESA VOSpec (output only). Euro3D Client reads Euro3D files and allows to display (or save to disk) positions of spatial elements (Spaxels) in Aladin, or extracted spectra (individual or co-added spectra) in VOSpec. Extracted spectra fully conform to the VOTable serialisation of the IVOA Spectral Data Model 1.0rc2.
ESA VOSpec is used to display spectra and may be used to perform further analysis, e.g. spectral line identifications, profile fitting etc.
Fact sheet:
With best regards,
Igor Received on 2007-03-07Z03:33:16