ADU = REAL (Read)
The scaling factor to convert the data output values into
counts for which Poisson statistics are required. This is the analogue to data units conversion factor for
unmodified CCD frames. [1.0]
ANGLE = _REAL (Read)
The positional angle of the major axis of
the stellar ellipses measured in degrees anti-clockwise from the y-axis (ie. as per PISAFIND). [0.0]
BACKGROUND = _REAL (Read)
The background value for the output frame. [0.0]
COMIX =
_REAL (Read)
The mixture coefficient, as a fraction, which defines how the Lorentzian function, at
each point in the analytical profile is added to the Gaussian or Exponential. [Global]
CROSS =
_REAL (Read)
The crossover point, as a percentage of the Gaussian peak, where an exponential
fall-off in the analytical stellar profile takes over from the Gaussian core. The exponential function is
joined on smoothly to the Gaussian. [Global]
ELLIP = _REAL (Read)
The ellipticity of the
output objects. [0.0]
GSIGM = _REAL (Read)
The standard deviation, in pixels, of the
Gaussian core of the analytical stellar profile. [Global]
INPUT = NDF (Read)
An NDF
containing a data array which is the same size as the required output data array.
NOISE =
LITERAL (Read)
The noise contribution to be added to output data. Can be Poisson,
Gaussian or None. [NONE]
NSIGMA = _REAL (Read)
The number of gaussian sigma to
generate the output objects to. [10.0]
OUTPUT = NDF (Write)
The output NDF to contain
the model objects.
POSITIONS = FILENAME (Read)
Input list of star positions and
intensities (see description). [PISAFIND.DAT]
SAT = _REAL (Read)
The saturation value
for output stars. [32767]
SCALE = _INTEGER (Read)
if scale is greater than one then
each output object pixel value is determined by the integration of the function values at
scalescale
equidistant parts within the pixel. This simulates an integration of the flux within each pixel. Using
this option increases the accuracy of the output pixel intensities, this may be important in areas with
large intensity gradients. [Dynamic]
SIGMA = REAL (Read)
The standard deviation of the
Gaussian noise contribution. [1.0]
TITLE = LITERAL (Read)
Title for the output frame.
[Output from PISAGEN]
XHIGH = _INTEGER (Read)
If an input frame is not given then
this value defines the upper limit of the output data array X-axis. [Dynamic]
XLOW =
_INTEGER (Read)
If an input frame is not given then this value defines the origin of the
output data array X-axis. [Dynamic]
YHIGH = _INTEGER (Read)
If an input frame is not
given then this value defines the upper limit of the output data array Y-axis. [Dynamic]
YLOW = _INTEGER (Read)
If an input frame is not given then this value defines the
origin of the output data array Y-axis. [Dynamic]
This program will not handle bad pixels.