The Aberration Function of the Misaligned Newtonian

If focused near the smallest image blur circle, the aberration function of misalignment is similar to the complicated form that appears in Fig. 6-2. That figure scarcely does justice to the deformation. The phase surface is like a drumhead that has just taken an enormous off-center blow. One half-circle is deformed downward, and the other half-circle has a balancing bulge upward. Added to this form is a small amount of the saddle or potato-chip deformation characteristic of astigmatism. The aggregate result is a wonderfully interesting surface to investigate by calculations, but it is bad news if it describes the wavefront of a telescope.

The functional form of the coma aberration is j coma

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