a telescope in which an infrared image of a distant object is focused on the photosensitive cathode of an image tube.
Origin of electron telescope
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for electron telescope
an astronomical telescope with an attachment for converting the infrared radiation emitted from the surface of planets into a visible image
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012