spatial_focal_curve¶
-
esis.optics.poletto.
spatial_focal_curve
(alpha, beta, entrance_arm_radius, grating_sagittal_radius)¶ Equation 34 of Thomas and Poletto (2003) :type alpha:
astropy.units.Quantity
:param alpha: Nominal incidence angle of the beam on the grating. :type beta:astropy.units.Quantity
:param beta: Nominal diffraction angle of the beam off the grating. :type entrance_arm_radius:astropy.units.Quantity
:param entrance_arm_radius: Distance from the center of then grating to the center of the source. :type grating_sagittal_radius:astropy.units.Quantity
:param grating_sagittal_radius: Sagittal radius of the diffraction grating :return: The length of the exit arm for optimal spatial focus- Parameters
alpha (astropy.units.Quantity) –
beta (astropy.units.Quantity) –
entrance_arm_radius (astropy.units.Quantity) –
grating_sagittal_radius (astropy.units.Quantity) –