Astrometer

Related to Astrometer: astronomy, astronomer, Astronomers

As`trom´e`ter


n.1.An instrument for comparing the relative amount of the light of stars.
References in periodicals archive ?
He also invented the astrometer, which could measure the relative apparent brightness of a star from the observer's position.
4-meter infrared telescopes, located 100 meters apart, to serve as a high-resolution astrometer.