get_wavelengths

jwst.lib.wcs_utils.get_wavelengths(model, exp_type='', order=None, use_wavecorr=None)[source]

Read or compute wavelengths.

Parameters:
modelJwstDataModel

The input science data, or a slit from a MultiSlitModel.

exp_typestr

The exposure type. This is only needed to check whether the input data are WFSS.

orderint

Spectral order number, for NIRISS SOSS only.

use_wavecorrbool

Use the corrected wavelengths in the wavelength attribute or recompute uncorrected wavelengths from the WCS.

Returns:
wl_array2-D ndarray

An array of wavelengths corresponding to the data in model.