Parameters

 These parameters may appear in either expert or non-expert mode.
 Keyword  Posn  Type        Description
 -------  ----  ----        -----------
 INP       1    UNIV        Any 2D dataset or primitive array
           GLOBAL.BINDS (Default binned dataset)
 BGND      2    UNIV        The background model dataset. A 2D
                            array matching the INP dataset, or a
                            constant value.
           GLOBAL.MODEL (Default model dataset)
 OUT       3    CHARACTER   The name of the output source search
                            results file. Enter ! for none
            -> GLOBAL.SSDS (Default results dataset)
     Default = SRCLIST
 EXPERT    -    LOGICAL     Run PSS in expert mode? Use default
                            to minimise prompting
     Default = NO
 MODE      -    CHAR        Processing mode. Should be one of
                            SEARCH, PARAM, UPLIM or UPMAP.
     Hidden default = SEARCH
 SOPT      -    CHAR        The statistic to be used. Either
                            CASH or GAUSSIAN.
     Default = CASH
 PSF, MASK, AUX CHAR        Control the source model psf used.
 SLICE     -    CHAR        Specification for range of image
                            to search.
     Default = *:*,*:*
 MAP       -    CHAR        The name of the output significance
                            or upper limits map. Accept default
     Default = !            for no map. Used for input if RESTART
                            (see below) is specified.
           -> GLOBAL.BINDS (Default binned dataset)
 SIGMIN    -    REAL        The threshold for detection in SEARCH
                            mode. Can be either a single value or
                            a pair - one threshold for each pass.
     Default = 5.0
 PLIST     -    CHAR        Source of test positions in PARAM and
                            UPLIM modes. See subtopic "Source
                            Positions" on valid replies.
            - GLOBAL.SSDS (Default results dataset)
 RA        -    CHAR        Right ascension of trial position.
                            Used in PARAM/UPLIM modes. Type ! to
                            terminate.
     Default = !
 DEC       -    CHAR        Declination of trail position. Used
                            in PARAM/UPLIM modes.
 TRY_AGAIN -    LOGICAL     Controls whether PSS will reprompt if
                            no sources were found above the given
                            threshold. Should be set false in batch
                            jobs.
     Hidden default = YES
 FERL      -    CHAR        In UPLIM or UPMAP mode, the confidence
                            level of the upper limits. In SEARCH and
                            PARAM mode, the flux error confidence.
     Default = '1 sigma'
 DEV       -    CHAR        Controls redirection of text output.
     Hidden default = TERMINAL
 These parameters may appear in only in expert mode.
 RESTART   -    LOGICAL     Restart PSS in search mode using an
                            existing significance map.
     Hidden default = NO
 QBAD      -    LOGICAL     Specified YES prevents a source in a
                            bad pixel
     Hidden default = YES
 PSFCON    -    LOGICAL     Psf to be constant across the field?
     Default = YES          Default is YES unless a psf model
                            specification is used.
 PSFPIX    -    INTEGER     The size of the psf box. This size is
                            a single number if PSFCON is true, but
                            may specify a changing size if PSFCON
                            is false (in pixels).
 RESCALE   -    LOGICAL     Rescale the background model? See the
                            "Background Rescaling" subtopic.
     Default = NO
 ISCALE    -    REAL        Initial scale factor. Only used if
                            RESCALE specified.
     Default = 1.0
 SAMPLE    -    INTEGER     Oversampling. Only available in expert
                            and SEARCH modes. See subtopic for more.
     Default = 1
 MULREJ    -    REAL        Multiplier for 50% enclosed energy radius
                            to control rejection of spurious sources.
     Hidden default = 1.0
 EXTEN     -    LOGICAL     Find measure of source extension. Only
                            in EXPERT mode. See "Extension Test" for
                            more.
     Default = NO
 SSUB      -    CHAR        Source subtracted dataset. Output
                            filename for copy of input with sources
                            removed. Default is not output.
           -> GLOBAL.BINDS (Default binned dataset)
     Default = !
 DIAG      -    LOGICAL     Switch on diagnostic mode. See subtopic
                            "Diagnostic mode" for details.
     Hidden default = NO
 DOPT      -    CHAR        The diagnostic options.
 ASYMMETRIC     LOGICAL     Produce asymmetric errors. The default is
                            symmetric.
     Default = NO
 PERL      -    CHAR        The positional error confidence level.
                            More than one value can be entered.
                            Separate by commas.
     Default = 90%
 MULTI     -    LOGICAL     Not usually prompted for.
     Hidden default = NO
 MLIST     -    CHAR        Image list file.
 SENSIG    -    REAL        Mapping sensitivity level.
     Default = 5.0
 NOVAR     -    CHAR        IGNORE lack of variance or invent
                            POISSON errors.
     Default = IGNORE
 VALIDATE  -    LOGICAL     Validate input datasets.
     Hidden default = NO