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Title: Glass Positive:- Halley's Comet, H. Knox-Shaw, Helwan Observ [Go to resource]
Description: Glass Positive:- Halley's Comet, H. Knox-Shaw, Helwan Observatory, Egypt, 1910, May 29d 6h 27m, 30-inch Reflector, focal length, 135 in, exposure, 15 min, 6 1/2" x 8 1/2" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: comets
black-and-white transparencies
astrophotographsTemporal: 1910 Source: Science Museum Creator: Knox-Shaw, Harold, 1885-1970 Identifier: 1929-735 Go to resource More Like this...
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