Blueing Coating a lens with an anti-reflective coating. C CAT 1. Computer Aided Telescope. Cell System that supports a mirror or a lens. Coating Layer of metal or dielectric that is applied on a surface.
Most important coatings are optical coatings.
Adjusting all optical elements such that they share a single optical axis. Computer Aided Telescope Telescope that is driven with the help of a computer. Examples are stepper motor driven Alt-Azimuth mounts. Cradle The part of a mount, special on GEM's, to rest the tube. Crayford focuser Sort of focuser which is based on pure friction.