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    Re: Malaspina
    From: Alexandre Eremenko
    Date: 2007 Oct 5, 19:40 -0400

    On Sat, 6 Oct 2007, George Huxtable wrote:
    > I was particularly interested in the
    > quintant, by Gabriel Wright of London,
    > which must be about the first
    > quintant ever. Its increased angular
    > range (144 degrees) over the sextant
    > (120) was really intended for taking
    > widely-spaced Sun lunars and for
    Is there a picture of this quintant somewhere on
    the Internet? I've seen several quintants in
    the book "Taking the stars" and in the museums and
    on e-bay. And it is frequently claimed that they
    were made for wide spaced Lunars.
    My own SNO has theoretical range 140 degrees which is
    closer to a quintant than to a sextant with 120
    or 125 degrees.
    And I tried several Lunars when the distance was more
    than 130. My experience shows that this is practically
    impossible with ordinary arrangement of the mirrors.
    I think this explains why quintants are relatively rare.
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