Google Sky: A Virtual Observatory
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This document discusses Google Sky, a project to create an online astronomy platform using Google Earth technology. It would provide an interactive digital sky map as the base layer, onto which Hubble Space Telescope and other astronomical images and data could be accurately overlaid. Key challenges include handling the massive amounts of multi-wavelength astronomical data over time. The project aims to make vast databases of astronomical images, catalogs and other data easily accessible and searchable to the public.
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Google Sky: A Virtual Observatory
- 1. Google Sky Carol Christian & Alberto Conti Space Telescope Science Institute Saturday, March 7, 2009
- 2. Community Missions Office Marc Postman Carol Christian Alberto Conti Pat Brown Saturday, March 7, 2009
- 3. CMO Goals Optimize the science Develop, nurture, and from community-led share innovations in astrophysics missions space astronomy and projects. science operations. Collaborate on the next generation of space astrophysics programs. Saturday, March 7, 2009
- 4. Astronomy Project Timeline A Partial List of Key Astrophysics Facilities Ares V Flights Beyond Einstein INTEGRAL WISE JWST SWIFT SIM? TPF? WMAP Herschel - Planck Kepler GLAST GALEX FUSE XMM Chandra Spitzer HST SOFIA SDSS VLT & Gemini Observatories PANSTARRS LSST TMT ALMA NVO Development NVO Operations 2000 2005 2010 2015 Start date and Probable Duration Saturday, March 7, 2009
- 5. Astronomy Project Timeline STScI Project and Mission Activity Ares V Flights Beyond Einstein INTEGRAL WISE JWST SWIFT SIM? TPF? WMAP Herschel - Planck Kepler GLAST GALEX FUSE XMM Chandra Spitzer HST SOFIA SDSS VLT & Gemini Observatories PANSTARRS LSST TMT ALMA NVO Development NVO Operations 2000 2005 2010 2015 Start date and Probable Duration Saturday, March 7, 2009
- 6. Massive amounts of information Saturday, March 7, 2009
- 7. Computer Biology Economics Science Medicine Government Astronomy Massive amounts of information Saturday, March 7, 2009
- 8. Astronomy is changing Old days: photographic plates 1960: astronomical data goes digital ? New instruments collect 100 GB/night Detectors follow Moore’s Law Total data double every 2 years Growth over 25 years is a factor of 30 in glass, 3000 in pixels Saturday, March 7, 2009
- 9. Astronomy is changing Old days: photographic plates 1960: astronomical data goes digital New instruments collect 100 GB/night Detectors follow Moore’s Law Total data double every 2 years Growth over 25 years is a factor of 30 in glass, 3000 in pixels Saturday, March 7, 2009
- 10. 41,253 square degrees or 2 Trillion pixels Challenges Saturday, March 7, 2009
- 11. One wavelength: 4 Terabytes Challenges Saturday, March 7, 2009
- 12. Multi-wavelength: 10-100 Terabytes Challenges Saturday, March 7, 2009
- 13. Time dimension: 10 Petabytes Challenges Saturday, March 7, 2009
- 14. New analysis & visualization tools are required Challenges Saturday, March 7, 2009
- 15. Google Earth Technology Saturday, March 7, 2009
- 16. Keyhole Grid Google Earth Technology Saturday, March 7, 2009
- 17. Keyhole Grid Google Earth Technology Saturday, March 7, 2009
- 18. Keyhole Grid Google Earth Technology Saturday, March 7, 2009
- 19. Keyhole Grid Mipmap Google Earth Technology Saturday, March 7, 2009
- 20. Keyhole Grid Mipmap Google File System Google Earth Technology Saturday, March 7, 2009
- 21. Keyhole Grid Mipmap Google File System Clipmap Google Earth Technology Saturday, March 7, 2009
- 22. Keyhole Grid Mipmap Google File System Clipmap Google Earth Technology Saturday, March 7, 2009
- 23. Keyhole Grid Mipmap Google File System Clipmap Google Earth Technology Saturday, March 7, 2009
- 24. Keyhole Grid Mipmap Google File System Clipmap Google Earth Technology Saturday, March 7, 2009
- 25. Keyhole Keyhole Markup Language Region 3 Region 2 Region 1 10 Saturday, March 7, 2009
- 26. Keyhole Keyhole Markup Language 10 Saturday, March 7, 2009
- 27. Keyhole Keyhole Markup Language Earth at 1m/pix 226 x 226 image 10 Saturday, March 7, 2009
- 28. Keyhole Keyhole Markup Language Earth at 1m/pix 226 x 226 image 10 Saturday, March 7, 2009
- 29. Saturday, March 7, 2009
- 30. Saturday, March 7, 2009
- 31. GoogleSky? Saturday, March 7, 2009
- 32. GoogleSky? Saturday, March 7, 2009
- 33. GoogleSky? Saturday, March 7, 2009
- 34. GoogleSky? Saturday, March 7, 2009
- 35. GoogleSky? Saturday, March 7, 2009
- 36. GoogleSky? Saturday, March 7, 2009
- 37. GoogleSky? Saturday, March 7, 2009
- 38. August 22nd, 2007 Saturday, March 7, 2009
- 39. Base Map Digitized Sky Survey • The National Geographic Society - Palomar Observatory Sky Atlas (POSS-I) • Second POSS (POSS-II) • photographic bands: J, F, N used to generate RGB • Oschin Schmidt & UK Schmidt Telescopes • Plates scanned at STScI Sloan Digital Sky Survey • 2.5-meter telescope on Apache Point • 1/4 of the sky Saturday, March 7, 2009
- 40. Merging the basemap • Project lat/long • Warp to Earth geodetic coordinates • Account for first order distortions across fields • Match tiles at edges • Color balance adjusted between tiles • Projection causes problems at the poles Saturday, March 7, 2009
- 41. HST Data Press Release images from HubbleSite • Selected WFP2 and ACS images • Recover World Coordinate System • Overlay image on basemap • Adjust images by hand • Retrieve “bounding box” and rotation • Warp to geodetic Saturday, March 7, 2009
- 42. PR collection in the NVO • Simple Image Access Protocol (SIAP) • World Coordinate System (WCS) Sky in Google Earth World Wide Telescope Saturday, March 7, 2009
- 43. Wcs. wcs.computewcs Saturday, March 7, 2009
- 44. Adding images • Accurate WCS astrometry.net or computewcs • Warp to Sky Add annotation, information, links Saturday, March 7, 2009
- 45. Metatags • NASA Education Space Science Resource Directory • Astronomy Visualization Metadata (AVM) standard • National Virtual Observatory meta-tags • Automated collection and clustering of tags • Astrophysics Data System • Proposal databases • Visual Faceted Browsing Saturday, March 7, 2009
- 46. Saturday, March 7, 2009
- 47. Catalogs • Myriad catalogs • HD, Messier, NGC (built in) • SIMBAD, NED, GSC2, SLOAN, 2MASS, USNOB (add-ons) • Hubble Legacy Archive • Personal Research Regionation Cone Search Sort, cull list Saturday, March 7, 2009
- 48. Saturday, March 7, 2009
- 49. Saturday, March 7, 2009
- 50. GoogleSky DEMO Saturday, March 7, 2009
- 52. http://hubblesite.org/explore_astronomy/gsky Press Release Video Saturday, March 7, 2009
- 54. http://bbs.keyhole.com/ubb/postlist.php/Cat/0/Board/sky Share your own files Saturday, March 7, 2009
- 55. Saturday, March 7, 2009
- 56. Dr Carol Christian carolc@stsci.edu Dr Alberto Conti aconti@stsci.edu Saturday, March 7, 2009
Editor's Notes
- The Community Missions Office is the focal point for bringing the cumulative expertise and experience of STScI personnel to tune relevant support for mission science operations, data archiving, proposal peer review, and education/outreach. Our philosophy is to integrate the scientific perspective into all aspects of missions to maximize the scientific return through cost effective application of our products, services, and operations abilities. Our motivation is to reduce operations costs for community-led missions by leveraging the science operations systems we already have in-place here at STScI. Experiences on several of our projects suggests that we are being successful in this regard.
- Here are the 3 primary goals the institute’s CMO strives to achieve.
- You clearly know the landscape of astronomy missions and facilities on the ground and in space is quite diverse and holds promise for many exciting discoveries. Our aim is to offer to the community the use our scientific and technical experiences to help minimiize duplication of effort, help avoid known operational pitfalls. But we, as members of this same community, are also keenly interested in identifying and collaborating in future missions that will carry astrophysics forward in a number of areas.
- These are the subset of those missions that we are or will be playing a role in. Obviously some, like HST and JWST, we play a key role. Others we play an important supporting role by carrying out a specific operations task that is integrated with an external science operations center or team.