Test CDS FITS data file
				   Version 2

			       William Thompson
				 24 June 1994


The file "testdata2.fits" contains the second iteration of a sample data file
in the format to be used for the CDS level-1 data.  A number of changes have
been made since the previous version.  The most important change is the switch
from a Y-Z coordinate system to an X-Y coordinate system.  This will require
modifications in the CDS software.  However, these modifications have already
been made for the calibration data.

Also, the image position now matches the true pointing of the SERTS instrument
when these data were taken.  This means that one should be able to overlay the
field of view onto a ground-based image for the same date, and get the correct
region of the sun.

A complete list of the changes follows:

  * Defined correct image position

  * Incorporated correct image orientation

  * Set SC_ROLL to reflect actual roll angle of SERTS during exposure.

  * Modified TWMIN and TWMAX to reflect the true range, rather than the centers
    of the first and last pixels.

  * Changed column labels to be more descriptive.

  * Added O IV 554.5 column (which includes O IV 555.3 as well).

  * Use X/Y instead of Y/Z.

  * Added all auxilliary columns.

  * Added TWBNDnnn and TGORDnnn keywords.

  * Added a number of additional keywords to the header.

Modifications added 24 June 1994:

  * Changed DEL_TIME from floating point seconds to long integer milliseconds.

  * Broadened the lines to better reflect the instrument.