EGODATA Contents
                          Version 1.12

                             2/8/96

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_deadspot.pl
        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" files are calibration IMAGES that correct
for instrument aberrations.

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

The "*.off.FITS" files are calibration IMAGES  that  correct  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"  file
contains   orientation  information  about  the  detectors.   The
"mkdataproducts.cl", "pipeline", and "reference"  files  describe
the nominal processing.

The   "tifdeadtime.FITS"    contains    additional    calibration
information.

The ds_deadspot.pl file contains a pixel list that describes  the
Deep Survey "deadspot".


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:


  New, more accurate wavelength solutions have been implemented.

  The "lookzen" angle (formerly the "dsszen" angle) in
  the *_lim.FITS limits files has been changed to 102.0 degrees.
  This value is used in eliminating earth-blocked observation time.

  The detector ADC limits in the *_lim.FITS files have been changed
  to maximize the source signal to noise ratio.

  A ds_deadspot.pl pixel list describing the Deep Survey deadspot
  has been added.

  CEP pipeline file:
     A "Scanner Remapped Image" record has been added.
     An error in the "Write Scanner Pulse" record has been fixed.

  Some errors in the installation notes have been corrected.