EGODATA Installation Guide
                      EGODATA version 1.17

                             2/2/00

Introduction

    The installation of the EUVE GO  Center  reference  data  set
(EGODATA)  is quite simple.  The reference data set consists of a
number of files contained in a single tape archive (tar file).

    These installation instructions assume that you already  have
IRAF  v2.11.3  or later installed as well as the ST TABLES v2.1.1
or  later  layered  package  installed  on  your   system.    For
additional  information  about  installing  IRAF  see  the  "IRAF
Installation and  Maintenance  Guide"  for  your  host  operating
system.   For  additional  details  about  installing  TABLES see
"TABLES Package Installation Procedures" for your host  operating
system.   If  you  have  STSDAS  installed,  then you may use its
FITSIO sub-package instead of the TABLES package.

Reading the TAR tape

First, determine the directory  that  you  want  to  install  the
reference  data  set into.  Note that IRAF has limitations on the
length of a path, so you may want to put the reference  data  set
in  a  relatively  short  path  to ensure that no unusual problem
occur.  All of the files in the  tar  start  with  a  'reference'
subdirectory,  so  you  need  not  create another subdirectory to
contain them.

We'll assume you want to unpack the reference data into your IRAF home
directory, which is /usr/me/iraf:

        cl> cd

To avoid having path name  problems  in  IRAF  you  may  want  to
explicitly  set  the  IRAF  IMDIR  environment  variable  to  the
absolute path of the current directory.  Be sure to  include  the
trailing '/'.  For example:

        cl> set imdir = /usr/me/iraf/

Use the rtar task to read the EGODATA distribution tape.  To read
from a tape:

        cl> softools
        so> allocate mtX                ! X = a, b, ...
        so> rtar -xtvf mtX
        so> deallocate mtX

Or, to read from tar file, called egodata.tar, use:

        cl> softools
        so> rtar -xtvf egodata.tar


The tar files should be listed as they are extracted, which should
look something like this:

rwxrwxrwx3582/320      0 Oct 20 11:56 1995 reference/
r--r--r--3582/320  34560 Oct 20 11:48 1995 reference/detector.fits
r--r--r--3582/320  17280 Oct 20 11:48 1995 reference/ds_ea_quad0.fits
r--r--r--3582/320  17280 Oct 20 11:48 1995 reference/ds_ea_quad1.fits
etc.


Next unpack all of the FITS  files.   Do  them  one  at  a  time,
instead of using a filename wildcard, to avoid a possible strfits
bug that deletes WCS cards from images.  If you wish, you can use
the  "unfits.cl"  script included with this release to unpack the
FITS files, as follows:

        cl> cd reference
        cl> cl < unfits.cl

Or you can unpack the files manually, one a time, by typing:

        cl> tables

        ta> strfits detector.fits "" "" oldirafname+ xdimtogf-
        ta> strfits hotspot.fits "" "" oldirafname+ xdimtogf-

        ...(do the other FITS files here)...

        ta> strfits tifdeadtime.fits "" "" oldirafname+ xdimtogf-

Then delete the FITS files:

        ta> delete *.fits


Test the installation

You can test the installation by checking  that  the  tables  and
images are readable.

        ta> tinfo *.tab
        ta> minmax *.imh

These commands should result in no error messages of any sort.