The muse_scipost_correct_dar recipe



Apply DAR correction for MUSE pixel tables.


Correct the coordinates in the pixel table by differential atmospheric refraction. This is a task separated from muse_scipost.



Create an object for the recipe muse_scipost_correct_dar.

import cpl
muse_scipost_correct_dar = cpl.Recipe("muse_scipost_correct_dar")



Cut off the data below this wavelength after loading the pixel table(s). (float; default: 4000.0) [default=4000.0].


Cut off the data above this wavelength after loading the pixel table(s). (float; default: 10000.0) [default=10000.0].


Reference wavelength used for correction of differential atmospheric refraction. The R-band (peak wavelength ~7000 Angstrom) that is usually used for guiding, is close to the central wavelength of MUSE, so a value of 7000.0 Angstrom should be used if nothing else is known. A value less than zero switches DAR correction off. (float; default: 7000.0) [default=7000.0].


Carry out a check of the theoretical DAR correction using source centroiding. If “correct” it will also apply an empirical correction. (str; default: ‘none’) [default=”none”].

The following code snippet shows the default settings for the available parameters.

import cpl
muse_scipost_correct_dar = cpl.Recipe("muse_scipost_correct_dar")

muse_scipost_correct_dar.param.lambdamin = 4000.0
muse_scipost_correct_dar.param.lambdamax = 10000.0
muse_scipost_correct_dar.param.lambdaref = 7000.0
muse_scipost_correct_dar.param.darcheck = "none"

You may also set or overwrite some or all parameters by the recipe parameter param, as shown in the following example:

import cpl
muse_scipost_correct_dar = cpl.Recipe("muse_scipost_correct_dar")
res = muse_scipost_correct_dar( ..., param = {"lambdamin":4000.0, "lambdamax":10000.0})

See also

cpl.Recipe for more information about the recipe object.

Bug reports

Please report any problems to Ole Streicher. Alternatively, you may send a report to the ESO User Support Department.