plural of Maksutov telescope

A catadioptric telescope with a meniscus corrector.

plural of telescoping

A kind of reflecting telescope: a modified Cassegrain telescope with light reflected sideways before reaching the primary mirror again.

A house with multiple attachments connected serially, decreasing in size.

plural of teleservice

Any service / function provided by means of a telecommunication link

A type of reflecting telescope using a concave primary mirror and a flat diagonal secondary mirror.

plural of Newtonian telescope

A telescope in which the medium between the objective and the eyepiece is water instead of air, used in some experiments involving aberration. / A telescope devised for looking into a body of water.