Photographs of Nebulæ and Clusters, Made with the Crossley Reflector

Photographs of Nebulæ and Clusters, Made with the Crossley Reflector, is a late 19th-century scientific publication by James Edward Keeler. It documents pioneering astronomical photography techniques used to capture images of nebulæ and star clusters at the Lick Observatory. The work highlights significant discoveries, including the existence of thousands of unrecorded nebulæ and their spiral structures, while addressing technical challenges faced during the photographic process. This publication marks an important advancement in the field of astrophotography.