SiaInterface < IVOA

---++ Collaborative Page for SIA Interface

The Simple Image Access (SIA) interface defines a protocol for
retrieving image data from a variety of astronomical image repositories
through a uniform interface.  The interface is meant to be reasonably
simple to implement by service providers.  A query typically defining a
rectangular region on the sky is used to query for candidate images.
The service returns a list of candidate images formatted as a
VOTable.  For each candidate image an access reference URL may be used
to retrieve the image.  Images may be returned in a variety of formats
including FITS and various graphics formats.  Referenced images are
often computed on the fly, e.g., as cutouts from larger images.

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---+++ SIA Working Drafts

   * [[http://www.ivoa.net/Documents/latest/SIA.html][Simple Image Access V1.0]] (Legacy SIA V1.0 specification)

The SIA V1.0 is now at the [[SiaV1RFC][request for comment]] stage on the path to becoming a recommendation.

A major update to the SIA interface, SIA V2.0, is in the planning stages.  An analysis discussing the scope and concepts of SIAV2 is available in the IVOA Note below.


---+++ SIA related IVOA Notes

   * [[%ATTACHURL%/SIA-V2-Analysis.pdf][SIAV2-Analysis.pdf]] (Scope and Concepts of SIAV2)
   * [[%ATTACHURL%/DAL2_Architecture.pdf][DAL2_Architecture.pdf]] (DAL2 Service Architecture and Standard Profile)
   * [[%ATTACHURL%/Polarization.pdf][Polarization.pdf]] (Note on
   polarization, primarily referring to radio data)

- %MAINWEB%.DougTody October 2008

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Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	SIA-V2-Analysis.pdf	r2 r1	manage	70.6 K	2008-10-27 - 18:30	DougTody	SIAV2 scope and concepts (updated Oct08)
pdf	DAL2_Architecture.pdf	r1	manage	89.7 K	2008-10-27 - 17:42	DougTody	DAL2 Service Architecture and Standard Profile
pdf	Polarization.pdf	r1	manage	389.0 K	2009-05-26 - 08:30	DougTody	Note on polarization
doc	siav2.doc	r1	manage	392.5 K	2009-11-07 - 17:55	DougTody	SIAV2 draft (Nov 7) (source)
pdf	siav2.pdf	r1	manage	1129.9 K	2009-11-07 - 18:06	DougTody	SIAV2 draft (Nov 7) (PDF)

This topic: IVOA > WebHome > IvoaDAL > SiaInterface
Topic revision: r8 - 2009-11-07 - DougTody