computePixelToDistortedPixel¶
- lsst.afw.geom.computePixelToDistortedPixel(pixelToFocalPlane, focalPlaneToFieldAngle)¶
Compute the transform
pixelToDistortedPixel
, which applies optical distortion specified byfocalPlaneToFieldAngle
.The resulting transform is designed to be used to convert a pure TAN WCS to a WCS that includes a model for optical distortion. In detail, the initial WCS will contain these frames and transforms:
PIXELS frame -> pixelToIwc -> IWC frame -> gridToIwc -> SkyFrame
To produce the WCS with distortion, replace
pixelToIwc
with:pixelToDistortedPixel -> pixelToIwc
- Parameters:
- pixelToFocalPlane
lsst.afw.geom.TransformPoint2ToPoint2
Transform parent pixel coordinates to focal plane coordinates
- focalPlaneToFieldAngle
lsst.afw.geom.TransformPoint2ToPoint2
Transform focal plane coordinates to field angle coordinates
- pixelToFocalPlane
- Returns:
- pixelToDistortedPixel
lsst.afw.geom.TransformPoint2ToPoint2
A transform that applies the effect of the optical distortion model.
- pixelToDistortedPixel