The cost of a laser collimator depends on the type of telescope you have. One could be looking at spending anywhere between $70 and $200 on a laser collimator.
The collimator present in a spectrometer convert the rays from the source to parallel rays .Telescope is used to watch the parallel rays which means for the telescope the object is located at infinity.so that we use telescope.
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telephone
A collimator is used to "bore sight" a scope. It will help ensure that the scope is close to being properly aligned.
collimator
Tungsten
Lines will be formed at the opposite side of the observer if the ruled surface of grating faces the collimator due to reflection
The Hubble Telescope weighs 24,500 pounds.
well to my calculations the telephone and the computer are most recent
The Yerkes Telescope is the worlds largest telescope that's founded by the University of Chicago.
allow only parallel rays from strem of rays
One could research stores that carry telescopes and equipment for telescopes. One may find a specialty store locally considering it is a larger city. If one has no luck in the local area, researching retailers or manufacturers on line would be recommended.