Definitions for "Collimation"
The act of collimating; the adjustment of the line of the sights, as the axial line of the telescope of an instrument, into its proper position relative to the other parts of the instrument.
The process of aligning the optics within a telescope. Most refractors are permanant collimated, but Newtonian reflectors generally require regular collimation for optimal performance.
The process by which a beam of energy or particles is aligned to form a parallel beam.