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Welcome to SkyQuery

SkyQuery is a scalable database system for cross-matching astronomical source catalogs. With SkyQuery you can

  • Access a growing list of astronomical catalogs
  • Access your own data in SkyServer MyDB
  • Write SQL to filter and process data
  • Do efficient spatial filtering
  • Run full-catalog cross-matches
  • Cross-match multiple catalogs using an algorithm based on parallel data processing and Bayesian statistics
  • Upload your data and download cross-match results in various standard formats

Since SkyQuery provides high performance data processing with storage allocated for each user, you have to sign in with you existing SciServer (former SkyServer) account. Click on the sign-in link in the top right corner to start.