WCSBase

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

Bases: object

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:

sipSip object or None

cpdis(2,) tuple of DistortionLookupTable or None

wcsprmWcsprm

det2im(2,) tuple of DistortionLookupTable or 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.

sip

Get/set the Sip object for performing SIP distortion correction.

wcs

A Wcsprm object to perform the basic wcslib WCS transformation.