MUSE Pipeline Reference Manual  2.1.1
Data Fields

Structure to hold the parameters of the muse_twilight recipe. More...

#include <muse_twilight_z.h>

Data Fields

const char * overscan
 If this is "none", stop when detecting discrepant overscan levels (see ovscsigma), for "offset" it assumes that the mean overscan level represents the real offset in the bias levels of the exposures involved, and adjusts the data accordingly; for "vpoly", a polynomial is fit to the vertical overscan and subtracted from the whole quadrant.
 
const char * ovscreject
 This influences how values are rejected when computing overscan statistics. Either no rejection at all ("none"), rejection using the DCR algorithm ("dcr"), or rejection using an iterative constant fit ("fit").
 
double ovscsigma
 If the deviation of mean overscan levels between a raw input image and the reference image is higher than |ovscsigma x stdev|, stop the processing. If overscan="vpoly", this is used as sigma rejection level for the iterative polynomial fit (the level comparison is then done afterwards with |100 x stdev| to guard against incompatible settings). Has no effect for overscan="offset".
 
int ovscignore
 The number of pixels of the overscan adjacent to the data section of the CCD that are ignored when computing statistics or fits.
 
int combine
 Type of combination to use.
 
const char * combine_s
 Type of combination to use (as string)
 
int nlow
 Number of minimum pixels to reject with minmax.
 
int nhigh
 Number of maximum pixels to reject with minmax.
 
int nkeep
 Number of pixels to keep with minmax.
 
double lsigma
 Low sigma for pixel rejection with sigclip.
 
double hsigma
 High sigma for pixel rejection with sigclip.
 
int scale
 Scale the individual images to a common exposure time before combining them.
 
int resample
 The resampling technique to use for the final output cube.
 
const char * resample_s
 The resampling technique to use for the final output cube. (as string)
 
int crtype
 Type of statistics used for detection of cosmic rays during final resampling. "iraf" uses the variance information, "mean" uses standard (mean/stdev) statistics, "median" uses median and the median median of the absolute median deviation.
 
const char * crtype_s
 Type of statistics used for detection of cosmic rays during final resampling. "iraf" uses the variance information, "mean" uses standard (mean/stdev) statistics, "median" uses median and the median median of the absolute median deviation. (as string)
 
double crsigma
 Sigma rejection factor to use for cosmic ray rejection during final resampling. A zero or negative value switches cosmic ray rejection off.
 
double lambdamin
 Minimum wavelength for twilight reconstruction.
 
double lambdamax
 Maximum wavelength for twilight reconstruction.
 
double dlambda
 Sampling for twilight reconstruction, this should result in planes of equal wavelength coverage.
 
int xorder
 Polynomial order to use in x direction to fit the full field of view.
 
int yorder
 Polynomial order to use in y direction to fit the full field of view.
 
double vignmaskedges
 Pixels on edges stronger than this fraction in the normalized image are excluded from the fit to the vignetted area. Set to non-positive number to include them in the fit.
 
int vignsmooth
 Type of smoothing to use for the vignetted region given by the VIGNETTING_MASK; gaussian uses (vignxpar + vignypar)/2 as FWHM.
 
const char * vignsmooth_s
 Type of smoothing to use for the vignetted region given by the VIGNETTING_MASK; gaussian uses (vignxpar + vignypar)/2 as FWHM. (as string)
 
int vignxpar
 Parameter used by the vignetting smoothing: x order for polyfit (default, recommended 4), parameter that influences the FWHM for the gaussian (recommended: 10), or x dimension of median filter (recommended 5).
 
int vignypar
 Parameter used by the vignetting smoothing: y order for polyfit (default, recommended 4), parameter that influences the FWHM for the gaussian (recommended: 10), or y dimension of median filter (recommended 5).
 

Detailed Description

Structure to hold the parameters of the muse_twilight recipe.

This structure contains the parameters for the recipe that may be set on the command line, in the configuration, or through the environment.

Definition at line 48 of file muse_twilight_z.h.


The documentation for this struct was generated from the following file: