WCSBase¶

class astropy.wcs.WCSBase(*sip, cpdis, wcsprm, det2im*)¶

Wcs objects amalgamate basic WCS (as provided by wcslib), with SIP and distortion paper operations.

To perform all distortion corrections and WCS transformation, use all_pix2world.

Parameters:	sip : `Sip` object or `None` cpdis : A pair of `DistortionLookupTable` objects, or `(None, None)`. wcsprm : `Wcsprm` object det2im : A pair of `DistortionLookupTable` objects, or `(None, None)`.

Attributes Summary

`cpdis1`	`DistortionLookupTable`
`cpdis2`	`DistortionLookupTable`
`det2im1`	A `DistortionLookupTable` object for detector to image plane correction in the x-axis.
`det2im2`	A `DistortionLookupTable` object for detector to image plane correction in the y-axis.
`sip`	Get/set the `Sip` object for performing SIP distortion correction.
`wcs`	A `Wcsprm` object to perform the basic wcslib WCS transformation.

Attributes Documentation

cpdis1¶

DistortionLookupTable

The pre-linear transformation distortion lookup table, CPDIS1.

cpdis2¶

DistortionLookupTable

The pre-linear transformation distortion lookup table, CPDIS2.

det2im1¶: A DistortionLookupTable object for detector to image plane correction in the x-axis.

det2im2¶: A DistortionLookupTable object for detector to image plane correction in the y-axis.