Caption: A diagram of the Celestron C8 telescope, a compact Schmidt-Cassegrain telescope.

Features:

1. clock drive.
2. eyepiece.
3. finderscope.
4. focusing knob.
5. LCD keypad.
6. fork arm.
7. on-off switch.
8. primary mirror: a spherical mirror.
9. Schmidt corrector plate.
10. secondary mirror: a convex mirror.
11. star diagonal.
12. star pointer.
13. telescope tube.

See file telescope_schmidt_cassegrain.html for a fullish description of a Schmidt-Cassegrain telescope like the C8 with particular attention to the function of the Schmidt corrector plate and the effective focal length.

Credit/Permission: © David Jeffery, 2013 / Own work.
Image link: Itself.
Local file: local link: telescope_c8_diagram.html.
File: Telescope file: telescope_c8_diagram.html.