Question

Write two main considerations required of an astronomical telescope.

Answer 1

focal length . microscope etc

Answer 2

Explanation:

Astronomical telescope is the device which is used to get magnified and distinct image of celestial bodies which are away from the earth.

The image obtained is virtual, inverted and magnified.

The two main considerations of the astronomical telescope are given below:

1) high light gathering power.

2) large magnetication and resolving power.

Resolving power is important to differentiate two objects and get a distinct image.

Light gathering power is used to get detail about the body.

If more light is collected by the telescope, more details will be obtained.