1. Virtual Observatories, Press Release Images, and Web Services Dr. Frank Summers Space Telescope Science Institute November 3, 2005

2. Collaborators Lisa Frattare, Zolt Levay Phil Hodge Kaushi Bandara Bob Hanisch, Carol Christian, Nahide Craig

3. Virtual Observatories Digital data, digital connections, digital processing Many telescopes, many repositories, many bandpasses Define standards, build infrastructure & tools

4. Press Release Images Pictures worth a thousand words VO Problems –Heavily processed –No coordinates –Different metadata

5. Web Services User to computer Computer to computer XML – self-describing –DTDs, Schema –VOTABLE

6. Simple Image Access SIA protocol defines a web service Input: cone search Output: list of images Several types of services: cutout, mosaic, atlas, pointed www.ivoa.net/Documents

7. PReSS Images SIA Info Database SIA Query Server Public Interfaces NVO Interfaces Internet

8. Major Tasks Gather image data, esp WCS Assemble image database Create web service Register with NVO

9. PReSS Archive STScI NewsCenter database Images Metadata –Astro info: object, category, instrument –News info: release, primary, composite

11. Get WCS Info Identify suitable images Retrieve FITS files Run WCS Transfer Tool

12. Non-astronomical Composite Print layout Solar system Non-VO Images

13. AstronomicalAstronomical w/ notation

14. FITS & WCS

15. Process FITS

17. WCS Transfer Tool FITS reference image Public release image Mark corresponding points –Automatic peak identification –Automatic solution refinement Python program –Python imaging lib (PIL) –Matplotlib –Tk interface

20. WCS Results

21. Create Database Loop through WCS processed images Scan through PReSS Calculate new quantities Output assembled data Perl program

23. HST PR SIA Web Service Perl programs within Apache web server Based on SIA 1.0 spec Process SIA query –Uses modified CGI::Validate Search database Create VOTABLE response –Uses GSFC’s ASTRO::VO::VOTABLE –Custom EPO fields All code will be available

26. To Do List Multiple image versions Test to production server Document & distribute Pipeline

27. Other Things AAS Astronomy Visualization Session Webcasts & Audience Einstein Opera