ComputePixelScale

class lsst.pipe.tasks.functors.ComputePixelScale(colCD_1_1, colCD_1_2, colCD_2_1, colCD_2_2, **kwargs)

Bases: LocalWcs

Compute the local pixel scale from the stored CDMatrix.

Attributes Summary

columns	Columns required to perform calculation.
name

Methods Summary

pixelScaleArcseconds(cd11, cd12, cd21, cd22)

Compute the local pixel to scale conversion in arcseconds.

Attributes Documentation

columns

name = 'PixelScale'

Methods Documentation

pixelScaleArcseconds(cd11, cd12, cd21, cd22)

Compute the local pixel to scale conversion in arcseconds.

Parameters

cd11Series

[1, 1] element of the local Wcs affine transform in radians.

cd11Series

[1, 1] element of the local Wcs affine transform in radians.

cd12Series

[1, 2] element of the local Wcs affine transform in radians.

cd21Series

[2, 1] element of the local Wcs affine transform in radians.

cd22Series

[2, 2] element of the local Wcs affine transform in radians.

Returns

pixScaleSeries

Arcseconds per pixel at the location of the local WC.