slice_wcs¶

pvextractor.slice_wcs(wcs, spatial_scale)[source]¶

Slice a WCS header for a spectral cube to a Position-Velocity WCS, with ctype “OFFSET” for the spatial offset direction

Parameters:

wcsWCS: The WCS of the spectral cube. This should already be sanitized and have the spectral axis along the third dimension.
spatial_scale: :class:`~astropy.units.Quantity`: The spatial scale of the position axis

Returns:

wcs_slice WCS: The resulting WCS slice