EGODATA Contents
                          Version 1.11

                            10/20/95

Manifest

In this release of the EGODATA, you  should  find  the  following
files:


        README.TXT
        contents.hlp
        detector.FITS
        ds.correction.FITS
        ds_alc_mask.pl
        ds_alc_vig.FITS
        ds_distort.FITS
        ds_ea_quad0.FITS
        ds_ea_quad1.FITS
        ds_ea_quad2.FITS
        ds_lex_mask.pl
        ds_lex_vig.FITS
        ds_lim.FITS
        ds_undistort.FITS
        hotspot.FITS
        install.hlp
        lw.correction.FITS
        lw.off.FITS
        lw_collresp.FITS
        lw_ea.FITS
        lw_lim.FITS
        lw_psf.FITS
        mkdataproducts.cl
        mw.correction.FITS
        mw.off.FITS
        mw_collresp.FITS
        mw_ea.FITS
        mw_lim.FITS
        mw_psf.FITS
        pipeline
        quaternion.FITS
        reference
        sca.correction.FITS
        sca_alc_mask.pl
        sca_alc_vig.FITS
        sca_distort.FITS
        sca_ea_quad0.FITS
        sca_ea_quad1.FITS
        sca_ea_quad2.FITS
        sca_ea_quad3.FITS
        sca_lex_mask.pl
        sca_lex_vig.FITS
        sca_lim.FITS
        sca_undistort.FITS
        scb.correction.FITS
        scb_alc_mask.pl
        scb_alc_vig.FITS
        scb_distort.FITS
        scb_ea_quad0.FITS
        scb_ea_quad1.FITS
        scb_ea_quad2.FITS
        scb_ea_quad3.FITS
        scb_lex_mask.pl
        scb_lex_vig.FITS
        scb_lim.FITS
        scb_undistort.FITS
        scc.correction.FITS
        scc_dag_mask.pl
        scc_dag_vig.FITS
        scc_distort.FITS
        scc_ea_quad0.FITS
        scc_ea_quad1.FITS
        scc_ea_quad2.FITS
        scc_ea_quad3.FITS
        scc_lim.FITS
        scc_tin_mask.pl
        scc_tin_vig.FITS
        scc_undistort.FITS
        sw.correction.FITS
        sw.off.FITS
        sw_ea.FITS
        sw_lim.FITS
        sw_psf.FITS
        tifdeadtime.FITS
        unfits.cl


All files with the .FITS suffix are standard FITS  format  files.
The *.pl files are pixel lists.  All other files are simple ASCII
text files.

File Types

Files  with  "sw",  "mw",  and   "lw"   prefixes   describe   the
characteristics  of  the  EUVE short, medium, and long wavelength
spectrometer channels.

Files with "ds", "sca", "scb", and "scc"  prefixes  describe  the
Deep  Survey,  Scanner  A,  Scanner  B,  and  Scanner  C  imaging
detectors.

Files with "alc", "lex", "tin", "dag" contain information that is
filter  specific,  where  the  filter  types are Aluminum/Carbon,
Lexan, Tin, and Dagwood, respectively.

The "*.correction.FITS" file is a calibration IMAGE that corrects
for instrument aberrations.

The "*_distort.FITS" and "*_undistort.FITS files are  calibration
IMAGES that correct for instrument distortions.

The "off.FITS" file is another calibration  IMAGE  that  corrects
for off-boresight aberrations.

The "*_ea.FITS"  files  contain  the  effective  areas  for  each
spectrometer.

The "*_ea_quadN.FITS" files contain the effective areas  for  the
Nth  "quadrant"  of the ds and scanning detectors.  The quadrants
are numbered like so:

     DS          SCANNER
         2                1 | 3
        ---               -----
         1                0 | 2
        ---
         0

The "_lim.FITS" files contain the nominal operating conditions of
the instrument.

The "_psf.FITS" files contain the Point Spread Functions for each
spectrometer.

The  "_collresp.FITS"  files  contain  the  collimator   response
functions.

The "detector.FITS" file contains  other  information  about  the
detectors.   "hotspot.FITS"  contains  various hotspots that have
been  noticed  on  the  spectrometers.    The   "quaternion.FITS"
contains   orientation  information  about  the  detectors.   The
"mkdataproducts.cl", "pipeline", and "reference"  files  describe
the nominal processing.

The   "tifdeadtime.FITS"    contains    additional    calibration
information.


Vignetting and filter mask information are contained in the files:

  [ds|sca|scb|scc].[alc|lex|tin|dag]_mask.pl  filter mask
  [ds|sca|scb|scc].[alc|lex|tin|dag]_vig      vignetting information


Changes since last major EGODATA release:


  Scanner and DS effective area files are now included.

  The vignetting and distortion maps have been improved.

  The "lookzen" angle (formerly the "dsszen" angle) in
  the *_lim.FITS limits files has been changed to 107.41 degrees.
  This corresponds to an atmosphere height of 200km,
  for the purposes of determining earth blockage.