UHDPRM (Jan98)                    ephem                   UHDPRM (Jan98)



NAME
    uhdprm
    
    
USAGE
    uhdprm ls_inim eph_path ot_file ut_str show update verbose
    
    
PARAMETERS
    
    ls_inim
        List of images to be edited.
    
    eph_path
        Pathname to the ephemeris directories.
        The ephemeris should be in directories named Jnnnn,
            where nnnn is the year.
        The directory for each year should contain three files:
            SUNAPP, SUNPBL, UTGMST.
        The directories for J1985  -  J1997  are  stored  in  the  GRASP
        directory, "ephem$".
    
    ot_file
        File name for a output file containing the HEDIT script.
        A temporary file name is generated if OT_FILE is "" or " ".
    
    ut_str
        String consisting of the names of header parameters that contain
        the UT time and date; e.g.
            ut_str="UT_DATE,UT_TIME"; or
            ut_str="DATE-OBS,TIME-OBS"
    
    show
        Print record of each edit operation?
        Same function as the HEDIT parameter.
    
    update
        Update of the image header?
        Same function as the HEDIT parameter.
    
    verbose
        Verbose output?
    
    
IMAGE HEADER WORDS
    
    The following header parameters are updated:
        HELIOGPA - P angle in degrees
        HELIOGB0 - Solar latitude of the sub-earth point in degrees.
        HELIOGSD - Semi-diameter in arcseconds
    
    
DESCRIPTION
    
    UHDPRM extracts the UT times and dates from the image headers;  uses
    EPHGEO  to  generate a table of SUNPBL ephemeris interpolated to the
    UT times; builds a script of HEDIT's to update the value of
        HELIOGPA
        HELIOGB0
        HELIOGSD
    in the image headers; and executes the script.
    
    
EXAMPLES
    
    
TIME REQUIREMENTS
    
    
BUGS
    
    
SEE ALSO
    ephem.xhdprm
    ephem.ephgeo
    image.hedit
    ephem.jnnn for 1985 - 2005