astronomical telescope any telescope designed to collect and record electromagnetic radiation from cosmic sources
collimator 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
equatorial a telescope whose mounting has only two axes of motion, one parallel to the Earth's axis and the other one at right angles to it
optical prism,
prism optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image
solar telescope a telescope designed to make observations of the sun
Verb
telescope -
make smaller or shorter; "the novel was telescoped into a short play"
condense,
concentrate,
digest undergo condensation; change from a gaseous to a liquid state and fall in drops; "water condenses"; "The acid distills at a specific temperature"
telescope -
crush together or collapse; "In the accident, the cars telescoped"; "my hiking sticks telescope and can be put into the backpack"
squash,
mash,
squelch,
crush,
squeeze to compress with violence, out of natural shape or condition; "crush an aluminum can"; "squeeze a lemon"