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OSN Archive: Current status and future implementations
José Miguel Ibáñez
Instituto de Astrofísica de Andalucía - CSIC
Sierra Nevada Observatory
First SVO Workshop on data publishing in the Virtual Observatory
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Outline
• Observatory• Instruments• Data Archive
• Architecture• Current status• Future implementations
• Conclusions
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Observatory• OSN: Observatorio de Sierra Nevada (www.osn.iaa.es)
• Observatory located at the ski resort of Sierra Nevada (2896m), Granada (Spain)
• Founded in 1981 by IAA-CSIC• Instrument Control Systems developed and maintained by IAA staff
• Optics maintained by IAA staff• Remote, In-situ and Service observing• Production: ~20 papers/year
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Hard working conditions
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Instruments• T150cm
• CCD• VersArray 2048B - 2k x 2k• FOV ~ 8’ x 8’
• Filtros: Johnson, Strömgren, Gunn, Molecular, Halpha, Emission, Cometary
• Albireo Spectrograph (CCD 2kx2k) • Slit, Argus (IFU)• 5 Diffraction Gratings • Under upgrade (GAIA RVS duplicator)
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Instruments (II)• T90cm
• CCD • VersArray 2048B - 2k x 2k• FOV ~ 13’ x 13’
• Filtros: Johnson, Strömgren, Gunn, Molecular, Halpha, Emission, Cometary
• Strömgren photometer• simultaneous observations of the bands uvby
• bands n and w Crawford Hb photo-metric system
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Instruments (III) – to be archived
• T60cm• BOOTES-IR (under development) – GRBs alerts
• T35cm• CCD Kodak 4008 x 2672
• FOV ~30’ x 20’
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Data Archive - www.osn.iaa.es
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Data Archive Architecture• Lector
• Automatically retrieve FITS files from the instruments (daily)• Parse headers• FITS renamed YYYYMMDD.HHMMSS.<filaname>.fit • Insert data into BD• User subscription and notification• Generate report
• GUI• Web interface• Queries and data download (public & proprietary)• Image & header preview
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Architecture
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E-R Database
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ADA project
• ADA (Archivo de Datos Astronómico)• Funded by project P07-FQM2864 of Junta de Andalucía
• Started March 2008• First release: Sep 2009• Raw data (science & calibrations)• Collaboration with company
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Main functionalities
• Raw data (science & calibrations)• Easy to add new instruments Edit XML config file• Automatic user subscription OBSERVER keyword• Public & Proprietary data• Proprietary period:
• Metadata (headers): used defined, default to 1.5 year• Data (images): used defined, default to 1.5 year
• Name Resolver (Sesame service)• Outputs: html, csv, VOTable• Download: Tarball
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Development tools• Linux OS: Debian 5• MySQL DB• Apache Tomcat 6• GUI: Spring Framework v2.5.6 + jQuery 1.3.x
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Computer system• 2 x CPU Xeon E5430 @2.66 GHz (2 x 4 cores)• 16 GB RAM• 5 TiB RAID 5+1• Linux Debian 5.05• @ IAA• Radio-link OSN-IAA
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Web interface: query
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Web interface: results
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Current status: numbers• 60 users• 2013: 210 GB / 68k files• Total: 786 GB / 260k files)
Archivo Datos OSN (# Ficheros)
0
10000
20000
30000
40000
50000
60000
70000
2009 2010 2011 2012 2013
Año
# Fi
cher
os
RoperT150
RoperT90 (Dic-2012)
Albireo
Archivo datos OSN (Gigabytes)
0
50
100
150
200
250
2009 2010 2011 2012 2013
Año
# G
igab
ytes
RoperT150
RoperT90 (Dic-2012)
Albireo
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Future developments• Update OS: migration to Debian 7• Add Strömgren data (photometric tables) convert to
FITS• Improvements to Web interface
• Query optimization• Improvement of user data search (by campaign ID)• Improvement of file download process (dataset > 3000 files)
• Astrometric calibration (WCS): Astrometry.net• VO services data publication
• ConeSearch• SIAP (Simple Image Access Protocol)• SSAP (Simple Spectrum Access Protocol)
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Future++ developments• Make available to the community observations taken
before September 2009 (2002-2009): CD/DVDs ingestion• Reduced data Pipelines
• Spectra• Image• Photometric catalogs
VO
High level data products
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Questions ?