Astronomical data
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Software
  - CFITSIO
    FITS reading and writing libraries for C, C++, Perl, Tcl, Python,
    MatLab, etc
 
  - HEALPix software for
    putting a sensible pixel grid on the sphere
 
  - Emmanuel Bertin's
    SExtractor
    software for source detection and metrology in astronomical
    images
 
  - Bertin's
    SCAMP
    software for aligning the
    astrometry and photometry of overlapping images
 
  - Doug Mink's
    imwcs
    software for automated WCS refinement
 
  - John Thorstensen's
    automatch
    software for automated WCS refinement
 
  - Emanuele Laface's AstroPhoto
  software for stacking images and DSLRCamera
  project for communicating with a camera and controlling a mount.
 
  - And last and also least, our own vaporware, 
    the Tractor, for source
    detection and measurement.
 
 
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