Heliometer Observations for Determination of Stellar Parallax Made at the Royal Observatory, Cape of Good Hope (1893) is a scientific book written by David Gill. The book contains a detailed account of the observations made using a heliometer, a device used for measuring the angles between two celestial objects, to determine the parallax of stars. The observations were made at the Royal Observatory in Cape of Good Hope during the year 1893. The book...