Can anyone tell me the Functions of the following parts of the Telescope?

[CriMsOn_EdgE]

Optical Tube -
Dew Cap -
Tube Rings -
Focuser -
Star Diagonal -
Equatorial Mount -
Counterweight -
Accessory Tray -
Finderscope -
Eyepiece -


thanks for the Help ^_^

[Michael Steen]

1. The long tube that holds the mirrors / lenses together.
2. A cap that sticks out from the front of the objective lens to help keep dew from forming on the lens.
3. Rings that go around the optical tube so that it can be connected to the equatorial mount
4. Holds the eyepiece and can be moved in and out of the optical tube so as to focus the light beam
5. I believe--secondary mirror that collects light from the primary at the bottom of the tube and directs it through the eyepiece. Could also be a prism at the eyepiece that bends the light 90 degrees for more comfortable viewing
6. A complex mount that allows the 'scope to be aimed at the polar axis, thereby permitting accurate tracking of stars, whether manually or by motor
7. A weight on the mount that balances out the weight of the telescope
8. Obvious
9. a small scope with a wider field of view, mounted on main scope to aid in finding objects
10. you look through it. changes the magnification and field of view