Influence of alignment errors of a telescope system on its aberration field.
Abstract
The study of aberrations in a system is considered. It is pointed out that a system in which the elements are tilted and decentered has no axial symmetry, and in fact no symmetry at all if the tilts, and decentrations are not coplanar. It is customary in such a case to give up on an aberrationtheoretic treatment and simply trace enough rays to produce a set of spot diagrams for various points in the field. However, in connection with the lack of symmetry, it is necessary to select a relatively large number of points. The considered investigation is concerned with an aberrationtheoretic approach which can be applied to such systems. This approach provides insight into the field behavior of the aberrations with great economy in the calculation. It is based on a concept suggested by Buchroeder (1976). In the given case, this concept considers for the component fields corresponding to the various surfaces centers of symmetry which do not coincide. Attention is given to the procedure for locating the centers of symmetry, aberrations fields, spherical aberration, and various types of astigmatism.
 Publication:

Optical alignment
 Pub Date:
 January 1980
 DOI:
 10.1117/12.959464
 Bibcode:
 1980SPIE..251..146S
 Keywords:

 Aberration;
 Alignment;
 Error Analysis;
 Instrument Errors;
 Telescopes;
 Astigmatism;
 Cassegrain Optics;
 Image Processing;
 Optical Correction Procedure;
 Optics;
 Aberration:Telescopes;
 Telescopes:Aberrations