Primary Seidel Aberrations Flashcards
0
Q
FIELD CURVATURE
A
Different parts of the field look better at different positions
1
Q
SPHERICAL ABERRATION
A
ON axis geometrical aberration
2
Q
COMA
A
OFF axis
3
Q
ASTIGMATISM
A
Two focal surfaces, one or both are curved. We define by sagittal and tangential rays.
Literal Greek translation of “not on point”
Off axis
4
Q
DISTORTION
A
Doesn’t effect resolution. Image location aberration that is field dependent.
Divination from the rectilinear flat grid
