wiki:USNOBproblems

 USNO-B image retrieval page gets subimages of the original schmidt plate scans (check images, uncheck finder charts)

  • thanks to the proud sponsorship of the National Geographic Society
  • Dude, check out the 7-segment display!
  • Scratch or satellite hit

here are some weird things we found in the Southern Equatorial Blue Survey: writing, scratches, partial plates at boundaries, plate sections containing no stars, etc

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