Reading Nature, Observing Science: Examining Material Practices in the Lick Observatory Archives and Kenneth S. Norris PapersMain MenuIntroduction to the Lick Observatory ArchivesThe Lick Observatory: Imaging the CosmosThe Lick Observatory: Eclipse ExpeditionsEclipse Intro page (first in a path)Introduction to Kenneth S. Norris PapersKenneth S. Norris Papers: Natural History in PracticeKenneth S. Norris Papers: Pedagogy and ConservationConnections: In Relation to NatureThese images demonstrate the different constructions of nature in the two archivesConnections: Materials of ObservationVisualization of the ConnectionsVisualizes the connections between all the contentReading Nature, Observing ScienceCaptions and information for the cases of objects on display at UCSC Special CollectionsAlex Moore6cd84a9f7efd71803c15562e48a509db9e0bb5a6Christine Turkb279a3dcf419860f915007f04f08e6fc0f8662ceDanielle Crawford22ce6a14f83c9ff73c3545a665951a092258f08e
Transcription of Perrine's copybook, circa 1890s
12016-06-03T14:04:21-07:00Christine Turkb279a3dcf419860f915007f04f08e6fc0f8662ce91846plain2016-06-08T13:36:33-07:00Christine Turkb279a3dcf419860f915007f04f08e6fc0f8662ceThe exposure necessary to bring out the structure of faint nebulae are very long, often of three and four hours duration and for some special objects, ten or twelve hours. These long exposures are attended with difficulties, many of which would disappear if the necessary light action could be secured in one or two hours...the negatives secured with shorter exposure would be of greater excellence and would show structure that is now lost to thinning due to difficulties of guiding [the telescope] during very long exposures.
This page references:
12016-06-06T09:55:37-07:00Charles D. Perrine's copybook1media/perrine_comets1898.jpgplain2016-06-06T09:55:37-07:0020160525120131+0000
