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26 October 2005HST Calibration Workshop1 The National Virtual Observatory and HST T HE US N ATIONAL V IRTUAL O BSERVATORY Robert Hanisch US National Virtual.

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Presentation on theme: "26 October 2005HST Calibration Workshop1 The National Virtual Observatory and HST T HE US N ATIONAL V IRTUAL O BSERVATORY Robert Hanisch US National Virtual."— Presentation transcript:

1 26 October 2005HST Calibration Workshop1 The National Virtual Observatory and HST T HE US N ATIONAL V IRTUAL O BSERVATORY Robert Hanisch US National Virtual Observatory Project Space Telescope Science Institute Baltimore, Maryland

2 26 October 2005HST Calibration Workshop2 Toward a “new astronomy” The Virtual Observatory is a collection of interoperating data archives and software tools that utilize the Internet to provide an environment for research in astronomy.

3 26 October 2005HST Calibration Workshop3 Toward a “new astronomy” The primary goal of the VO is to enable correlative studies of large, distributed data collections.

4 26 October 2005HST Calibration Workshop4 Threads of the the VO fabric Multiwavelength astrophysics Archival Research Survey astronomy Temporal astronomy NGC3104 Moore’s LawDigital detectorsThe InternetData Standards

5 26 October 2005HST Calibration Workshop5 VO data access and HST Cone Search for observation catalog Simple Image Access Protocol for quick- look images and legacy programs Simple Spectral Access Protocol for spectrographs and SEDs SkyNodes for databases of object catalogs (HDF, UDF, GOODS, et al.) Abell 1795 HST WF/PC2 & Chandra

6 26 October 2005HST Calibration Workshop6 HST legacy archive and VO Immediate access to calibrated data –Associations, visit-based –No latency –Data recalibrated as necessary, in advance of requests –Support for cut-outs, thumbnails –Transform user’s view of HST archive to sky atlas Improved astrometry to simplify data comparison Footprint services (precise sky coverage) Object catalogs with links to spectrum Find moving targets given ephemeris

7 26 October 2005HST Calibration Workshop7 Tiered system New Public Archive Archive Generation System DADS Calibrated data and metadata Commonly formatted data and metadata, sky atlas view High level products, source catalogs Users

8 26 October 2005HST Calibration Workshop8 Features, benefits DADS is unchanged VO compatibility is almost automatic Data access is more efficient Lower potential barrier for use of HST data Expert mode of access remains available

9 26 October 2005HST Calibration Workshop9 Summary NVO infrastructure now quite mature HST legacy archive plans focus on improved data quality, high level products, and ease of access HST legacy archive provides VO compatibility at minimal cost

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