Info

2n'u

Since 1/u'2 = (f'/yi)2 and the coefficients Sm and Sjv always contain the factor (yi/f')2 (see Tables 3.4 and 3.5), we see that these longitudinal measures are independent of aperture. If we now set y = ym for the edge of the pupil, then:

ImIt

Ipr Im

At the mean astigmatic focus Im, the image diameter is given by

5nq ast,m

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