Function lsst::meas::astrom::makeWcs

Function Documentation

std::shared_ptr<afw::geom::SkyWcs> lsst::meas::astrom::makeWcs(SipForwardTransform const &sipForward, SipReverseTransform const &sipReverse, geom::SpherePoint const &skyOrigin)

Create a new TAN SIP Wcs from a pair of SIP transforms and the sky origin.

Parameters

• [in] sipForward: Mapping from pixel coordinates to intermediate world coordinates.

• [in] sipReverse: Mapping from intermediate world coordinates to pixel coordinates.

• [in] skyOrigin: ICRS position of the gnomonic projection that maps sky coordinates to intermediate world coordinates (CRVAL).

Exceptions

• pex::exceptions::InvalidParameterError: if the forward and reverse SIP transforms have different CRPIX values or CD matrices.