ObliqueAstigmatism#

class deeptrack.aberrations.ObliqueAstigmatism(*args: tuple[Any, ...], coefficient: PropertyLike[float | list[float]] = 1, **kwargs: dict[str, Any])#

Bases: Zernike

Zernike polynomial with n=2, m=-2.

This class represents a Zernike polynomial corresponding to oblique astigmatism, characterized by a phase aberration with a radial index of n=2 and an azimuthal index of m=-2. It describes astigmatism with axes oriented obliquely to the horizontal and vertical.

Parameters#

coefficient: PropertyLike[float or list of floats], optional: The coefficient of the polynomial. Default is 1.

Attributes#

n: int: The radial index of the Zernike polynomial (always 2 for ObliqueAstigmatism).
m: int: The azimuthal index of the Zernike polynomial (always -2 for ObliqueAstigmatism).
coefficient: PropertyLike[float or list of floats]: The coefficient of the polynomial.

Examples#

Apply an ObliqueAstigmatism Zernike phase aberration (n=2, m=-2) to a simulated fluorescence image:

>>> import deeptrack as dt

>>> particle = dt.PointParticle(z=4 * dt.units.micrometer)
>>> oblique_astigmatism_aberration = dt.ObliqueAstigmatism(coefficient=0.2)
>>> aberrated_optics = dt.Fluorescence(
>>>     pupil=oblique_astigmatism_aberration,
>>> )
>>> aberrated_particle = aberrated_optics(particle)
>>> aberrated_particle.plot(cmap="gray")