Function lsst::afw::geom::makeTanSipWcs(lsst::geom::Point2D const&, lsst::geom::SpherePoint const&, Eigen::Matrix2d const&, Eigen::MatrixXd const&, Eigen::MatrixXd const&)

Function Documentation

std::shared_ptr<SkyWcs> lsst::afw::geom::makeTanSipWcs(lsst::geom::Point2D const &crpix, lsst::geom::SpherePoint const &crval, Eigen::Matrix2d const &cdMatrix, Eigen::MatrixXd const &sipA, Eigen::MatrixXd const &sipB)

Construct a TAN-SIP SkyWcs with forward SIP distortion terms and an iterative inverse.

Parameters

• [in] crpix: Center of projection on the CCD using the LSST convention: 0, 0 is the lower left pixel of the parent image

• [in] crval: Center of projection on the sky

• [in] cdMatrix: CD matrix, where element (i-1, j-1) corresponds to FITS keyword CDi_j and i, j have range [1, 2]. May be computed by calling makeCdMatrix.

• [in] sipA: Forward distortion matrix for axis 1

• [in] sipB: Forward distortion matrix for axis 2