Astronomers are the one who uses tele-scopes the most. A deep space astronomical tele-scope is their core tool. However, they use different types of tools for different purposes. For instance, an optical tele-scope like “Hubble Space Tele-scope” or a radio tele-scope is used on both earth and space piles. However, if they need to study something within the earth’s atmosphere, the infrared tele-scope is a suitable option. But to study higher altitudes, an ultraviolet tele-scope is needed.