compute_dispersion

jwst.wavecorr.wavecorr.compute_dispersion(wcs, xpix=None, ypix=None)[source]

Compute the pixel dispersion.

If xpix or ypix is not provided, the dispersion is computed on a grid based on wcs.bounding_box.

Parameters:

wcsWCS: The WCS object for this slit.
xpixndarray, float, optional: X pixel coordinates for dispersion elements.
ypixndarray, float, optional: Y pixel coordinates for dispersion elements.

Returns:

dispersionndarray: The pixel dispersion in meters.