Collimation is used for telescopes to make sure the telescopes are perfectly aligned. The reflector will not produce the best image if the aligned is not just right.
This term is used in surveying. 'Height of collimation' means height of instrument.Generally this term is used while doing levelling i.e. Measuring elevation of given point.
The height of collimation is the height of the line of sight. It is the vertical distance of the horizontal plane through a telescope.
Telescopes in general. Optical telescopes Radio telescopes Gravity wave telescopes
Telescopes are used inside
Light is found by reflecting telescopes and refracting telescopes are used to dected sound
diaphragm
Telescopes are instruments used by astronomers. The first person to do this was Galileo.
Optical telescopes.
The largest telescopes that use visible light are reflector telescopes.
Telescopes are used to see things that are far away from earth. Using telescopes we can see things that are millions of miles away. Most of the telescopes are on Earth but some of them are in space such as the Hubble Space Telescope.
The largest telescopes that use visible light are reflector telescopes.
Ground telescopes and orbital satellite telescopes.