Astronomical photography — Audiobooks

Photographs of Nebulæ and Clusters, Made with the Crossley Reflector

Photographs of Nebulæ and Clusters, Made with the Crossley Reflector

by James Edward Keeler

On the Construction of a Silvered Glass Telescope Fifteen and a half inches in aperture, and its use in celestial photography

On the Construction of a Silvered Glass Telescope Fifteen and a half inches in aperture, and its use in celestial photography

by Henry Draper