This directory contains detector descriptions.

PARAMETERS:

    The following detector parameters are used.

          title - Title used for labeling of output.
    description - Multiple lines of text used for documentation of output.
     tablescale - Factor by which to multiply the table values.
 	   type - Type of detector: ccd
          ndisp - Number of pixels along the dispersion.
	pixsize - Pixel size in mm.
	   gain - Detector gain in electrons/ADU.  This value can be
		  overridden by the user.
	rdnoise - Detector readout noise in electrons RMS.  This value can be
		  overridden by the user
	   dark - Detector dark count rate in electrons/s/pixel.  This value
		  can be overridden by the user.
     saturation - Saturation in electrons. [1]
          dnmax - Data number maximum. [1]

    [1] The saturation and data number maximum values are for an extracted
    object and so is profile dependent.  It is intended to provide a
    warning of possible error to users.

TABLE:

    The detector table has two columns, the wavelength in Angstroms and
    the fractional detected quantum efficiency (DQE) at that wavelength.
    For values in percent use a "tablescale" parameter of 0.01.  If no
    table is given then 100% DQE at all wavelengths is assumed.

EXAMPLE

    # title = "T2KB - SITe 2048x2048 CCD"
    # type = ccd
    # ndisp = 2048
    # pixsize = 0.024 mm
    # gain = 2.0 e-/ADU
    # rdnoise = 4.0 e-
    # dark = 0 e-/s
    # saturation = 70000 e-
    # dnmax = 65535 counts

     2500 0.00
     3200 0.160
     3650 0.498
     4050 0.649
     5000 0.765
     6000 0.818
     7000 0.799
     8000 0.603
     9000 0.331
    10000 0.10
    10700 0.00

SYNTAX:

    Comment lines begin with '#' and can contain any text and can occur
    anywhere in the file, though normally found at the beginning.

    Parameters are comment lines with the form

	# <parameter> = <value>

    where whitespace is required between each field, <parameter> is a single
    word parameter name, and <value> is a single word value.  A quoted string
    is a single word so if the value contains whitespace it must be quoted.
    Any text following the value is ignored.

    The optional table is a multicolumn list of numeric values.  The list
    must be in increasing order in the independent columns.  Only 1D (two
    columns) and 2D (three columns) tables are currently supported.  2D
    tables must form a regular grid.  The table will be interpolated.
    Extrapolation outside of the table consists of the taking the nearest
    value; thus, a single line defines a constant value for all values of
    the independent variable.  If a "tablescale" parameter is specified
    then the table values are multiplied by this value.
