Sp

Spherical Primary form of a 2-mirror Cassegrain telescope

§ 3.2.6.3(d)

S (suffix)

Pertaining to a laterally decentered 2-mirror telescope treated as a Schiefspiegler

Eq. (3.352)

 Symbol Meaning Where defined Si, S2 (suffix) Pertaining to third, fifth order spherical aberration for the Strehl Intensity Ratio Eq. (3.471) spri Distance of the entrance pupil from the first surface Eq. (3.25) Spl Stop shift of an aspheric plate relative to the primary Eq. (3.219) Spri Quantity calculated for the secondary as though it were a primary in a Schiefspiegler Eq. (3.344) s, t Spatial frequency of the object or image function in the n directions (MTF) Eq. (3.485) sol (suffix) Pertaining to a solid Schmidt § 3.6.4.1 T (suffix) Pertaining to wavefront tilt for the Strehl Intensity Ratio Eq. (3.471) TC, 0 (suffix) Pertaining to a 2-mirror telescope of general or SP form with zero lateral (translation) decenter-ing coma Eq. (3.386), Eq. (3.389) t, s, m Tangential, sagittal and mean astigmatic surfaces, foci or sections Fig. 3.20, Fig. 3.21 tot (suffix) Pertaining to the total aberration (coma) defining neutral points (decenter) Eq. (3.377) U, U' Angles of finite rays to the axis Fig. 3.2, Eq. (3.83) U (Q') The complex amplitude at Q' (diffraction theory) Eq. (3.434) 5u'p Angular aberration referred to the principal plane § 3.1 A (u) Aplanatic parameter (see surface number v) § 3.2.2, Eq. (3.19)

Symbol

Meaning

Where defined

Su'y

Normalized diffraction angle (kqym) in the y-direction

Eq. (3.435), Eq. (3.436)

U, v

Normalized ("optical") coordinates of Q referred to the principal ray (diffraction theory)

§ 3.10.5

Va, Vß

Typical orthogonal polynomials of a set (Zernike polynomials)

Eq. (3.426)
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