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- Refractor Telescope
- Uses lenses
- Reflector Telescopes
- Uses mirrors
- Objective Lens
- Light-gathering
- Ocular Lens
- Magnifying
- Cassegrainian Reflector
- Concave mirror reflects light to a convex mirror fixed in the center near the front of the tube.
- Composite Telescope
- Uses both mirrors and correcting objective lens to gather light.
- Radio Telescope
- Radio telescopes use radio waves to gather data
- Alkaid
- 1 Eta
- Alcor
- 2 Zeta
- Mizar
- 3 Zeta
- Megrez
- 4 Delta
- Phecda
- 5 Gamma
- Dubhe
- 6 Alpha
- Beta
- 7 Merak