Term: cassegrainian telescope: a 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
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: drivel: a worthless message
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: osage: a member of the Siouan people formerly living in Missouri in the valleys of the Missouri and Osage rivers; oil was found on Osage lands early in the 20th century
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: fly poison: all parts of plant are highly toxic; bulb pounded and used as a fly poison; sometimes placed in subfamily Melanthiaceae
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: proxy fight: a measure used by an acquirer to gain control of a takeover target; acquirer tries to persuade other shareholders that the management of the target should be replaced
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: siderite: a meteorite consisting principally of nickel and iron
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: ureterocele: prolapse of the end of the ureter into the bladder; may obstruct urine flow
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: silver lime: large tree native to eastern Europe and Asia Minor having leaves with white tomentum on the under side; widely cultivated as an ornamental
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: cecum: the cavity in which the large intestine begins and into which the ileum opens
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: rattlesnake: pit viper with horny segments at the end of the tail that rattle when shaken
Broader: reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Unrelated: quadrivium: (Middle Ages) a higher division of the curriculum in a medieval university involving arithmetic and music and geometry and astronomy