An Image Astrometry Toolkit , by Douglas J. Mink, presented as a poster paper at the annual meeting of the Division on Dynamical Astronomy of the American Astronomical Society, Charlottesville, VA, 1-3 April 1998 .
Most astronomical images are now digital.
Those which are taken on CCD detectors at most telescopes arrive with only rudimentary pointing information. Software tools have been written to automatically match imaged objects to source catalogs and save the relationship between pixel position and sky position in the image files in a more accurate way. A 1.0 stars which should appear in an image. As this code can also deal with the world coordinate systems written into Space Telescope or Digitized Sky Survey data, they are tools for astronomers needing positions of objects in almost any kind of digital astronomical image.