F1 f2 d1 Change in spherical aberration S/. A very important despace effect is the change of spherical aberration in the axial image (and therefore uniformly over the whole field) when d1 is varied and the image shifts according to (3.398). The third order contribution (Sj )2 of the secondary is easily derived from the recursion formulae (3.336) and (3.337) or directly from (3.39) and (2.72) as

Was this article helpful?

0 0
Telescopes Mastery

Telescopes Mastery

Through this ebook, you are going to learn what you will need to know all about the telescopes that can provide a fun and rewarding hobby for you and your family!

Get My Free Ebook

Post a comment