Stellar Photography with Small Telescopes without Driving-Clocks

Abstract

STELLAR photography has now become such an important branch of astronomy, that anything which will encourage possessors of small telescopes to turn their energies in this direction will tend towards the advancement of the celestial sciences. It is proposed to show here that useful work may be done by amateur astronomers with their ordinary small refractors, and with none of the mechanical contrivances which are essential for such large telescopes as are used in the international photographic survey of the heavens, which are driven by elaborate and ocostly machinery in order that the camera shall follow the apparent motion of the stars.