visir_util_undistort7

Usage

Overview

The files listed in the Set Of Frames (sof-file) must be tagged: VISIR-chopnod-corrected-file.fits CHOPNOD_CORRECTED Optionally, a bad pixel map may be provided: VISIR-bpm-file.fits STATIC_MASK

The product(s) will have a FITS card ´HIERARCH ESO PRO CATG´ with a value of: UNDISTORTED The recipe default values for the transformation are only valid for spectral data taken in Low resolution mode

Options

--bkgcorrect <bool>

Cho-nod correct the data (bool; default: True). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.bkgcorrect [default = True].

--xl <int>

Coordinate in spatial direction. Together with yl it defines the lower point of a rectangle containing only skylines for the wavelength shift detection (int; default: 117). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.xl [default = 117].

--yl <int>

Coordinate in wavelength direction. See xl (int; default: 110). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.yl [default = 110].

--xh <int>

Coordinate in spatial direction. Together with yl it defines the higher point of a rectangle containing only skylines for the wavelength shift detection (int; default: 125). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.xh [default = 125].

--yh <int>

Coordinate in wavelength direction. See xh (int; default: 150). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.yh [default = 150].

--slit_skew <float>

Distortion correction: Skew of slit (degrees) (clockwise) (float; default: 0.52). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.phi [default = 0.52].

--spectrum_skew <float>

Distortion correction: LMR Skew of spectrum (degrees) (counter- clockwise). Not used in High Resolution (float; default: 1.73). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.ksi [default = 1.73].

--vert_arc <float>

Distortion correction: LR Detector vertical curvature (pixel). Reduced by a factor 4 in MR. Not used in HR A-side. Increased by a factor 115/52 in HR B-side (float; default: -0.8). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.eps [default = -0.8].

--hori_arc <float>

Distortion correction: LMR Detector horizontal curvature (pixel). Increased by a factor 1.5 in HR A-side. Reduced by a factor 2 in HR B-side (float; default: 0.0). The full name of this option for the EsoRex configuration file is visir.visir_util_undistort.delta [default = 0.0].

Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command.

Version

visir_util_undistort 4.4.2