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% README File FOR AIPS Release 15APR97
% This File describes the patches to known bugs in 15APR97.  See also
% the patches.html file; it MUST contain the same information.
% placed under RCS control by Pat Murphy; aipspgmr group should have access.
% most recent modification $Date: 1997/09/11 20:25:37 $ (UT)
% IMPORTANT: If you performed a binary "load-and-go" installation, and you
%            do *not* have any Fortran compiler (or your revision of the
%            compiler predates ours, you will most likely not be able to
%            apply most of these patches.  In particular, under SunOS or
%            Solaris, Sun Fortran SC2.0.1 or later is required. 
%  Unfortunately, the NRAO AIPS group is unable at this time to provide
%  binary replacements for the affected tasks.


Tasks and other things for which patches have been made:

              1.  HF Table problem.  1997-08-18 (FITTP updated on 1997-09-02).
              2.  FILLM autocorrelation fix.  1997-08-22
              3.  Registration uses 15OCT96 instead of 15APR97.  1997.09.11

===============================================================================
------------------------------------------------------------------------
ID:           1.
Task:         FITTP, FITLD, UVLOD, IMLOD

Summary:      This patch fixes a problem that causes some information
              to be lost from AIPS tables when written to FITS under
              some circumstances.  In particular, frequency group codes
              should now be preserved in HF tables.  This patch should
              be regarded as essential if you are reducing astrometry
              or geodesy data and using the CALC/SOLVE package but is
              only advisory otherwise.

Files:        /15APR97/APL/SUB/NOTST/R3DTAB.FOR
              /15APR97/APL/PGM/NOTST/FITTP.FOR

Fix:          1.  Fetch R3DTAB and put it in $APLNOT; fetch FITTP.FOR
                  and put it in $APGNOT 
              2.  Compile R3DTAB with COMRPL $APLNOT/R3DTAB
              3.  Compile all of the FITS readers/writers with
                  COMLNK $APGNOT/FITTP $APGNOT/FITLD $APGNOT/UVLOD \
                         $APGNOT/IMLOD

Documentor:  Chris Flatters 
Date:        1997-08-18 (FITTP updated on 1997-09-02).

------------------------------------------------------------------------
ID:           2.
Task:         FILLM

Summary:      This patch fixes a problem when using FILLM on data taken
              between online revision 20 ('new' format, Jan '88) and 23
              (autocorrelations included, Feb '90).  FILLM used to have
              no problem with this, but recent changes in the scaling
              of visibilities in the online system required a FILLM
              change that introduced problems when loading data without
              autocorrelations.

Files:        /15APR97/APL/PGM/NOTST/FILLM.FOR

Fix:          1.  fetch FILLM.FOR and put it in $APGNOT
              2.  COMLNK $APGNOT/FILLM

Documentor:  Gustaaf van Moorsel
Date:        1997-08-22

------------------------------------------------------------------------

ID:           3.
Task:         Registration

Summary:      The REGISTER script that generates and mails the
              registration information to NRAO has the wrong date string
              encoded into it.  It has 15OCT96 but should be 15APR97. 

Files:        /15OCT96/SYSTEM/UNIX/INSTALL/REGISTER

Fix:
              1.  Fetch the file and put it in $INSUNIX prior to
                  registering your site. 
              2.  chmod +x $INSUNIX/REGISTER
              3.  Run the script when you wish to register:
		       $INSUNIX/REGISTER

Documentor:   Patrick P. Murphy
Date:         1997.09.11.

------------------------------------------------------------------------