Astronomical Telescope

Astronomical Telescope Points : Astronomical Telescope, Definition, Use, Construction, Working Definition Telescope is used to see clearly the objects lying at great distances. Use Telescope is used to see heavenly bodies for example Moon, Stars and so on. Construction Telescope consists of two convex (converging) lenses
• Objective
• Eye - piece Objective It is placed towards the object and is of big focal length. Eye - Piece It is placed close to the eye and is of small focal length. Working • Heavenly bodies are very distant as of the objective of telescope.
• Parallel rays as of the heavenly bodies after transitory through the objective form image ‘AB’ within the focal length of the eye-piece, which then magnify it.
• Now the eye - piece is so adjusted that the first image A’ B’ is formed at the junction of F₁, and F₂ Due to this rays from A’ B’ after passing through the eye -piece becomes parallel and final image is formed at infinity. Characteristics of Image Final image is highly magnified, Real and inverted with respect to the original object.