uves_cal_cd_align7

Usage

Overview

Given two input frames (CD_ALIGN_xxx where xxx = BLUE or RED) which contain only one echelle order, this recipe measures the shift in the cross-dispersion direction of that order. For RED input frames, only the lower chip is processed.

The recipe produces a CD_ALIGN_TABLE_xxxx (with xxxx = BLUE or REDL) with columns X: Column number YCENi: Centroid from Gaussian fit (for i = 1,2) SIGMAi: Stdev from Gaussian fit BACKi: Constant background from Gaussian fit NORMi: Normalization constant from Gaussian fit YDIFF: Difference YCEN2 - YCEN1 of centroid positions

and the QC-parameters ESO.QC.YDIFF(AVG|MED|RMS), which are the average, median and root-mean-square of the y-shift, respectively.

Options

--debug <bool>

Whether or not to save intermediate results to local directory (bool; default: False). The full name of this option for the EsoRex configuration file is uves.debug [default = False].

--plotter <str>

Any plots produced by the recipe are redirected to the command specified by this parameter. The plotting command must contain the substring ´gnuplot´ and must be able to parse gnuplot syntax on its standard input. Valid examples of such a command may include ´gnuplot -persist´ and ´cat > mygnuplot$$.gp´. A finer control of the plotting options can be obtained by writing an executable script, e.g. my_gnuplot.pl, that executes gnuplot after setting the desired gnuplot options (e.g. set terminal pslatex color). To turn off plotting, set this parameter to ´no´ (str; default: ´no´). The full name of this option for the EsoRex configuration file is uves.plotter [default = no].

--process_chip <str>

For RED arm data process the redl, redu, or both chip(s) (str; default: ´both´). The full name of this option for the EsoRex configuration file is uves.process_chip [default = both].

--steps <int>

Step size in pixels (int; default: 100). The full name of this option for the EsoRex configuration file is uves_cal_cd_align.steps [default = 100].

--window <int>

The half window height used for Gaussian fitting (int; default: 50). The full name of this option for the EsoRex configuration file is uves_cal_cd_align.window [default = 50].

--xborder <int>

Exclude a border region of this size (pixels) (int; default: 200). The full name of this option for the EsoRex configuration file is uves_cal_cd_align.xborder [default = 200].

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

uves_cal_cd_align 6.1.8