MUSE Pipeline Reference Manual  2.1.1
Data Structures | Typedefs
Recipe muse_geometry: Compute relative location of the slices within the field of view and measure the instrumental PSF on the detectors.

Data Structures

struct  muse_geometry_params_s
 Structure to hold the parameters of the muse_geometry recipe. More...
 

Typedefs

typedef struct muse_geometry_params_s muse_geometry_params_t
 Structure to hold the parameters of the muse_geometry recipe. More...
 

Detailed Description

Author
Peter Weilbacher
  Processing first works separately on each IFU of the raw input data (in
  parallel): it trims the raw data and records the overscan statistics,
  subtracts the bias and converts them from adu to count. Optionally, the
  dark can be subtracted and the data can be divided by the flat-field.
  The data of all input mask exposures is then averaged. The averaged
  image together with the trace table and wavelength calibration as well as
  the line catalog are used to detect spots. The detection windows are
  used to measure the spots on all images of the sequence, the result is
  saved, with information on the measured PSF, in the spots tables.

  Then properties of all slices are computed, first separately on each IFU
  to determine the peak position of the mask for each slice and its angle,
  subsequently the width and horizontal position. Then, the result of all
  IFUs is analyzed together to produce a refined horizontal position,
  applying global shifts to each IFU as needed. The vertical position is
  then determined using the known slice ordering on the sky; the relative
  peak positions are put into sequence, taking into account the vertical
  offsets of the pinholes in the mask.  The table is then cleaned up from
  intermediate debug data. If the --smooth parameter is set to a positive
  value, it is used to do a sigma-clipped smoothing within each slicer
  stack, for a more regular appearance of the output table. The table is
  then saved.

  As a last optional step, additional raw input data is reduced using the
  newly geometry to produce an image of the field of view. If these
  exposures contain smooth features, they can be used as a visual check of
  the quality of the geometrical calibration.

Typedef Documentation

Structure to hold the parameters of the muse_geometry recipe.

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