- a telescope with a divided, adjustable objective, formerly used to measure small angular distances, as those between celestial bodies.
Origin of heliometer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for heliometer
In 1824 the great Knigsberg heliometer was commenced, and it was completed in 1829.
To sum up briefly the history of the development of the heliometer.
There are three methods in which this heliometer can be used.
He also invented a heliometer, afterwards perfected by Fraunhofer.
But there is one instrument of great value, the heliometer, which is not used at Greenwich.History of Astronomy
- a refracting telescope having a split objective lens that is used to determine very small angular distances between celestial bodies
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