Radio Telescope
These telescopes are large to collect the much longer "radio waves." These can be used on earth except the atmosphere can cause interference when broadcasting a picture.
Infra-red telescope
We are able to see galaxies, stars and Planetary Nebula far away thanks to infra-red telescopes. These are usually placed on mountains to reducee more interference of water vapour.
Optical telescope
These are the most commonly used telescope used by average people. We use these to look from earth into space to see Stars, Galaxies and even planetary nebula that give off visible light.
Ultraviolet telescope
These telescopes are used to see U.V. rays. since the atmosphere sheilds most U.V. rays, these telescopes are often launched out side the atmosphere using a rocket. these can see the ultraviolet light emitted by the sun as well as ultraviolet light from other stars and galaxies.
X-ray telescopes
X-ray telescopes are also placed outside the atmosphere becaus the short waves have trouble getting through the atmosphere. these telescopes can see dwarf stars, the moon and clusters of galaxies.
Gamma ray telescopes
These are placed well far from the atmosphere to pick up the high frequency, high energy waves. these telescopes help us see Supernovas, black holes and neutron stars.