adjust the line of sight of (an optical instrument)
Force radiation vectors to be parallel.
The term used for adjusting a telescope to gain maximum optical performance by means of alignment of the optical parts.
To produce light with parallel rays.
On an optical sight, to adjust line of sight to coincide with the axis of the barrel.
To collimate a telescope, one lines up the optical components, the lenses, mirrors, prisms, and eyepieces, into their proper positions. Collimating maximizes image quality.