Photographs of Nebulæ and Clusters, Made with the Crossley Reflector

"Photographs of Nebulæ and Clusters, Made with the Crossley Reflector" by James Edward Keeler is a landmark scientific work documenting early astrophotography. It focuses on the author's efforts to photograph nebulæ and star clusters using the Crossley Reflector at Lick Observatory. The book highlights the advancements and difficulties of capturing detailed images of celestial objects, revealing revolutionary discoveries about the previously unrecorded nebulæ and their spiral structures. The narrative begins with a note on technical issues with the photographic plates, and the preface outlining the author's plan to photograph the bodies, setting the stage for the reader the author's work.