File:The American annual of photography (1917) (14780884711).jpg

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Identifier: americanannualof1917newy (find matches)
Title: The American annual of photography
Year: 1917 (1910s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

View Book Page: Book Viewer
About This Book: Catalog Entry
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Text Appearing Before Image:
Figure 2.Photograph of the Sun Showing Sunspots. inches in diameter, while using a telescope which has an objectglass of three inches in diameter. This size of image enablesus to photograph a great many details on the suns surface—even if it is 93,000,000 miles away. Amongst the details wesee on these photographs, the most prominent are the sunspots.(Figures i and 2.), then the faculse or white clouds of metalhcvapors floating above the surface of the photosphere, and alsodetails of the photosphere itself. The faculse are best shownwhen near the suns limb; but the spots show at any stage oftheir journey around the sun when on the side turned towards us. In solar photography I find it convenient to use a right-angle prism between the object-glass and the eyepiece, as in 160
Text Appearing After Image:
IN THE BLUE MOUNTAINS, N. S. W. Harold Cazneaux. this way we can point the camera away from the direct raysof the sun, (Figure 3.) Anyone with a reflecting camera, byremoving the lens and focusing the projected image from atelescope on to the ground glass, should be able to get goodsolar photos. It is necessary to use slow or process plates tosecure the best results, and at the same time stop down thelens while using very quick exposures. In developing these negatives, care should be taken not toover-develop, as it is very easy to get them too dense. Inprinting also great care is necessary to use a paper whichis suitable to the negative, giving briUiancy and at the sametime good detail.

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https://www.flickr.com/photos/internetarchivebookimages/14780884711/

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Volume
InfoField
1917
Flickr tags
InfoField
  • bookid:americanannualof1917newy
  • bookyear:1917
  • bookdecade:1910
  • bookcentury:1900
  • booksubject:Photography
  • bookpublisher:New_York___Tennant_and_Ward
  • bookcontributor:Harold_B__Lee_Library
  • booksponsor:Brigham_Young_University
  • bookleafnumber:208
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014

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