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FXHREAD

FXHREAD

Name


FXHREAD

Purpose


      Reads a FITS header from an opened disk file.

Explanation


      Reads a FITS header from an opened disk file.

Use


FXHREAD, UNIT, HEADER [, STATUS ]

Inputs


UNIT = Logical unit number.
  Opt. Inputs :

Outputs


HEADER = String array containing the FITS header.
  Opt. Outputs:
STATUS = Condition code giving the status of the read. Normally, this
is zero, but is set to !ERR if an error occurs, or if the
first byte of the header is zero (ASCII null).

Keywords


None.

Calls


None.
  Common :
None.

Restrictions


The file must already be positioned at the start of the header. It
must be a proper FITS file.

Side Effects


The file ends by being positioned at the end of the FITS header, unless
an error occurs.

Category


Data Handling, I/O, FITS, Generic.
  Prev. Hist. :
W. Thompson, Feb 1992, from READFITS by J. Woffard and W. Landsman.
W. Thompson, Aug 1992, added test for SIMPLE keyword.
  Written :
William Thompson, GSFC, February 1992.
  Modified :
Version 1, William Thompson, GSFC, 12 April 1993.
Incorporated into CDS library.

Version


Version 1, 12 April 1993.
Converted to IDL V5.0 W. Landsman September 1997



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