Question

What is a terrestrial telescope and an
astronomical telescope ?​

Answer 1

Answer:

terrestrial telescope is the one which is used watch the things on earth's surface

astronomical telescope is one which is used to watch heavenly body

Answer 2

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A terrestrial telescope is one which is used for viewing distant objects on the Earth. An astronomical telescope is used for viewing celestial objects like planets, stars and galaxies.

An astronomical telescope produces a virtual image which is inverted. For astronomical observations, this inversion is inconsequential. In telescopes for terrestrial observations, this problem is overcome by incorporating an inverting lens between the objective and the eyepiece.

Also, since an astronomical telescope is almost always aimed at a faint source, the objective must have a large light gathering power so that an astronomical telescope has to be built large. Terrestrial objects are not so dim and hence a terrestrial telescope can be portable.

Terrestrial telescopes can be monocular (mono + ocular) - for viewing with one eye-or binocular (bi + ocular) - for viewing with both eyes. Monocular telescopes for terrestrial viewing usually use an inverting lens while binocular field glasses use two totally internally reflecting prisms; one to turn the image right side up and the other to correct the lateral inversion

[$\bf\large\underline\red{Note}$ : In Latin, oculus means eve An evepiece is also called an ocular.]