Definition of "equatorial telescope" [equatorial telescope]
An astronomical telescope that keeps a star in view by revolving about an axis that is parallel to the earth's axis of rotation.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.