چۆن گۆ دەکرێ collimator

وەرگێڕانی collimator

پێناسەی collimator

• a small telescope attached to a large telescope to use in setting the line of the larger one
• optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam