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surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments alidad , alidade
any telescope designed to collect and record electromagnetic radiation from cosmic sources astronomical telescope
satellite equipped with a telescope to observe infrared radiation astronomy satellite
reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror Cassegrainian telescope , Gregorian telescope
optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror coelostat
accurate adjustment of the line of sight of a telescope collimation
small telescope attached to a large telescope to use in setting the line of the larger one collimator
reflecting telescope so constructed that the light is led to a plate holder or spectrograph coude system , coude telescope
United States astronomer said to have built the first telescope made in America; also the first director of the United States Mint (1732-1796) David Rittenhouse , Rittenhouse
telescope's tube within a tube drawtube
surveyor's level having a short telescope fixed to a horizontally rotating table and a spirit level Dumpy level
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 equatorial
small refracting telescope field glass , glass , spyglass
telescope attached to larger one, small finder
type of refracting telescope that is no longer used in astronomy Galilean telescope
telescope inventor Galileo
Italian astronomer and mathematician who was the first to use a telescope to study the stars; demonstrated that different weights descend at the same rate; perfected the refracting telescope that enabled him to make many discoveries (1564-1642) Galileo , Galileo Galilei
instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope heliometer
reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed Herschelian telescope , off-axis reflector
reflecting telescope in which the aberration of the concave mirror is reduced by a meniscus lens Maksutov telescope
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