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By Kaitchuck and Henden, CDROM., $69.95.
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In addition to writing a book on the subject Astronomical Photometry and described (described here) the authors have written a professional level computer program based upon the techniques described in their book. The software package is a fairly complete photoelectric photometry data reduction system. There are several programs, each of which handle a different aspect of the reduction process. This modularity allows the user the flexibility to adapt the reduction process to their specific needs. Specifics are:

  • Input and output to the programs is via simple ASCII files.
  • There are five major programs which calculate:
  • dead time (if required),
  • instrumental magnitudes and colors,
  • air mass,
  • heliocentric Julian dates,
  • extinction coefficients,
  • transformation coefficients to the Johnson system,
  • conversion to the standard photometric system, and
  • the reduction of differential photometry.

Data from either a pulse counting or DC photometer system can be reduced Programs execute on an IBM-PC or compatible. Requires only 128K memory. Automatic selection of math coprocessor, if present. Supplies as both executable (compiled) programs and FORTRAN 77 source code.