id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
36470	Keeler, James Edward	Photographs of Nebulæ and Clusters, Made with the Crossley Reflector			.txt	text/plain	26112	4934	100	several years to photographing the brighter nebulæ and star clusters, with double-slide plate-holder, like the one used with the Crossley reflector, photographic telescope, says that a star should remain bisected by a axis of the large mirror cuts the photographic plate is not then a matter For photographing stars and nebulæ the Crossley reflector is provided with [Illustration: DOUBLE-SLIDE PLATE-HOLDER OF THE CROSSLEY REFLECTOR.] In making the photographs of nebulæ for which the Crossley telescope is at star on the upper edge of the plate (which, when the telescope is north of At present the Crossley reflector is being used for photographing nebulæ, which have been photographed with the Crossley telescope are most of the was made from a photograph taken with the Crossley reflector on July 6, "New Nebulæ discovered photographically with the Crossley Reflector of the "Use of the Crossley Reflector for Photographic Measurements of Position,"	./cache/36470.txt	./txt/36470.txt