(r5) SiaInterface < IVOA

IVOA Web>IvoaDAL>SiaInterface (revision 5) (raw view)~~EditAttach~~

---++ 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.

---

---+++ 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%/DAL2_Architecture.pdf][DAL2_Architecture.pdf]] (DAL2 Service Architecture and Standard Profile)
   * [[%ATTACHURL%/SIA-V2-Analysis.pdf][SIAV2-Analysis.pdf]] (Scope and Concepts of SIAV2)

- %MAINWEB%.DougTody October 2008

---


<br/>
<!--
      * Set ALLOWTOPICRENAME = %MAINWEB%.TWikiAdminGroup
-->

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
pdf	DAL2_Architecture.pdf	r1	manage	89.7 K	2008-10-27 - 17:42	DougTody	DAL2 Service Architecture and Standard Profile
pdf	SIA-V2-Analysis.pdf	r2 r1	manage	70.6 K	2008-10-27 - 18:30	DougTody	SIAV2 scope and concepts (updated Oct08)

Topic revision: r5 - 2009-05-21 - PaulHarrison

IVOA

Log in or Register

IVOA.net
Wiki Home
WebChanges
WebTopicList
WebStatistics

Twiki Meta & Help
IVOA
Know
Main
Sandbox
TWiki

TWiki intro
TWiki tutorial
User registration
Notify me

Working Groups

Interest Groups

Time Domain

Committees

Stds&Procs

www.ivoa.net
Documents
Events
Members
XML Schema