1. Making Press Release Astronomical Images NVO Compliant Lisa M. Frattare Space Telescope Science Institute Communicating Astronomy with the Public June 14 - 17, 2005 ESO – Garching

2. CAP - ESO Garching June 05 L. Frattare NVO National Virtual Observatory National Virtual Observatory: A U.S. effort to systematically organize and make available astronomical data, images, and other content so that it can be retrieved and used by many users. Similar to VO (European effort)

3. CAP - ESO Garching June 05 L. Frattare Simple Image Access (SIA) Protocol Standards to Meet the Compliance Requirements T his is important for those who manufacture astronomical images from astronomical data (observatory, amateurs, image processors)

4. CAP - ESO Garching June 05 L. Frattare Image Compliance with NVO/VO NVO/VO compliance: press release images need World Coordinate System (WCS)

5. CAP - ESO Garching June 05 L. Frattare Which images to include - No artwork - No multi-image layout - No moving targets (SS objects)

6. CAP - ESO Garching June 05 L. Frattare A. Compare two images: 1) Reference image – FITS data(WCS) 2) Target image – press release TIFF B. Prepping the images: 1) Filter Selection 2) Combining pairs of like-filters Software to Measure WCS

7. CAP - ESO Garching June 05 L. Frattare FITS file prepping Recommend retrieving strongest filter (i.e. HST: broadband R, or Halpha) Combine pairs of data to remove cosmic rays (still retain the WCS)

8. CAP - ESO Garching June 05 L. Frattare CR

9. CAP - ESO Garching June 05 L. Frattare CR

10. CAP - ESO Garching June 05 L. Frattare CR-Combined

11. CAP - ESO Garching June 05 L. Frattare TIF file prepping Recommend Splitting Channels (if necessary)

12. CAP - ESO Garching June 05 L. Frattare Split Channels narrowband

13. CAP - ESO Garching June 05 L. Frattare Split Channels narrowband

14. Wcs. wcs.computewcs

15. Fit

16. CAP - ESO Garching June 05 L. Frattare Transformation Transformation Coefficients Voila! WCS

17. CAP - ESO Garching June 05 L. Frattare Requirements, Future Plans & Credits - Python-based GUI to run on all platforms - Requires Python Imaging Library (PIL) and mathplotlib - Testing Summer 2005 on STScI OPO images database - Image Comparison for Calculated WCS - Anticipated Release Date – 2006 Personnel (at STScI) - Frank Summers – project manager, database and web service development - Lisa Frattare – tool set development - Zolt Levay – HST PR procedure development - Jonathan Eisenhamer – web service deployment - Phil Hodge – programming - Kaushala Bandara (U. Toronto) – intern processing of HST PR archive images - Carol Christian – NVO EPO coordinator