This download is a PowerPoint and lesson plan explaining how light is refracted through lenses in series to create an image in a telescope. Also discussed are chromatic aberrations.
This is lesson 1 / 12 from my Astrophysics / Cosmology course, all available individually or as a bundle at a reduced price.
Ray diagram to show the image formation in normal adjustment.
Angular magnification in normal adjustment and formula for this
Focal lengths of the lenses.