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    Re: Determining Actual Time of Meridian Passages Before Computers
    From: George Huxtable
    Date: 2007 Jan 14, 16:10 -0000

    Jim wrote|-
    
    I think that most observatories had what were called
    | Transit telescopes.The Greenwitch museum still has the setup used by
    | Flamsteed.
    
    Right, about the transit instruments, but wrong about Flamsteed.
    
    When Flamsteed died, his widow carted away all the instruments from
    the observatory. Flamsteed had stumped up for most of them himself,
    after all. There was no equipment-budget, in those days. So little or
    nothing remains from Flamsteed's days.
    
    His successor, Halley, re-equipped the observatory, and I think his
    transit is still there.
    
    But the big transit circle, that sits astride the meridian lines,
    measuring right-ascensions from the time of transit, and declinations
    also, was Airy's, in the mid-nineteenth century.
    
    George.
    
    contact George Huxtable at george---.u-net.com
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    
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