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    Historic astronomical publications online
    From: Paul Hirose
    Date: 2007 Jul 03, 12:57 -0700

    NASA and the Smithsonian have a cooperative project to put a large
    collection of astronomy publications online.
    Go to http://www.adsabs.harvard.edu/ and click the Browse link.
    Some of this material is interesting to the celestial navigator. For
    example, here's a Lick Observatory report on an expedition to observe
    the total eclipse of the Sun in the northwest U.S. on June 8, 1918. They
    used a sextant and "mercurial horizon" to determine the observing site's
    latitude and longitude. A nearby telegraph station provided time signals
    to calibrate the chronometer. The report notes that the high Sun
    altitude as it crossed the meridian made latitude observations difficult
    with a sextant.
    One non-obvious technique on this page
    is to select the title of the journal in the list, enter a number in the
    Volume # box, but leave the Page #, Plate #, and Cover # blank. That
    will retrieve a table of contents for that volume, with clickable links
    to the articles. On the other hand, entering a number in the Page # box
    gets you a page of clickable thumbnail images of the pages in the
    requested volume.
    Another interesting site is "Making of America Books". Try browsing the
    categories Astronomy, Navigation, Spherical, Trigonometry, etc.
    Both these sites are satisfactory with a dial-up connection. You can
    view the documents a page at a time.
    I block messages that contain attachments or HTML.
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