Fl f2 di

Transposing (2.72):

Eliminating s2 and f1 from (2.71), (2.72) and (2.76):

Eliminating L from (2.74) and (2.79) gives f2 = dl(b - dl) (2.80) 2 f - b + 2dl ()

We now introduce a further important constructional parameter P in Figs. 2.11 and 2.12, representing the distance between the primary and secondary images. This is a positive quantity in both the Gregory and Cassegrain forms and is defined by

Transposing (2.63) gives

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