William Thompson, GSFC, February 1992. Incorporated into CDS library. Read basic FITS files. Read the primary array from a disk FITS file. String containing the name of the file to be read.
Data range to read in the second dimension.
Step size to use in reading the data. Default value is 1. Ignored if less than 1. Data array to be read from the file. String array containing the header for the FITS file.