Microsoft Research WorldWide Telescope (Sergey Berezin)

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Microsoft Research WorldWide Telescope (Sergey Berezin)

  1. 1. Microsoft Research World Wide Telescope
  2. 2. WWT History 1997 – Jim Gray’s TerraServer (now Microsoft Research Maps) http://research.microsoft.com/apps/pubs/default.aspx?id=69651 2002 - The World-Wide Telescope, an Archetype for Online Science Jim Gray, Microsoft Research Alex Szalay, Johns Hopkins University 2003 – SkyServer DR1 http://cas.sdss.org/dr7/en/ 2007 – World Wide Telescope project presented at TechFest 2010 – Terapixel project http://research.microsoft.com/en-us/projects/terapixel/ 2011 – Layerscape
  3. 3. Image pyramids
  4. 4. Terapixel project: Palomar obsevatory
  5. 5. Terapixel project: UK Schmidt Telescope
  6. 6. Equirectangular projection Image source: http://drdave.co.uk/blog
  7. 7. Tessellated Octahedral Adaptive Subdivision Transform Image source: http://drdave.co.uk/blog
  8. 8. TOAST tiles
  9. 9. Terapixel project: numbers Raw data: • 1791 pairs of red-light and blue-light images acquired from two telescopes, scanned into 23,040x23,040 or 14000x14000 images. Windows HPC Cluster: • The high-performance computational platform used to run Terapixel, consisting of 64 compute nodes, each a quad-core Intel Xeon CPU with 16 GB RAM and 1.7 TB of storage. Generation of RGB plates • Processing time: 5 hrs. Input: 417 GB (compressed, 4TB uncompressed) • Output: 790 GB (approx. 500MB/plate) Stitch images into a spherical image • Processing time: 3 hours Optimize image to remove seams • Processing time: 4 hours 15 minutes
  10. 10. Terapixel project: technologies • Windows HPC cluster • Trident scientific workflow • DryadLINQ
  11. 11. Terapixel project: results

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