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    Re: Inverting Scope
    From: Courtney Thomas
    Date: 2004 Oct 10, 09:02 -0500

    I too have an inverting scope and would be pleased to learn about it's
    use and qualities and if I can contribute to this process please let me
    Courtney Thomas
    Bruce Stark wrote:
    > At 22:10 on the twenty-second of last month Fred wrote:
    > "Bruce recently acquired an inverting telescope; perhaps he'll jump in
    > here if he's
    > back from his trip to compare it's virtues to those of the modern prism
    > monocular."
    > Although I wasn't back then, I am now, and am beginning to skim a
    > month's worth of postings. My SNO-T, (or SNO-T) sextant is stamped 1974.
    > Optics of both scopes are excellent. The inverting scope, interestingly,
    > has at least as much light-gathering ability as a 7X35 Tamaya monocular.
    > That in spite of having a smaller objective lens. Perhaps it's that the
    > light passes through fewer glass surfaces.
    > The star scope is far better at gathering light than the other two, of
    > course.
    > The wire reticule is fixed at the back of the objective tube, just as
    > Alex describes it. The wires are nearly 2 degrees apart in the field.
    > Two vertical, two horizontal. Why the horizontal ones, I don't know. But
    > they do make it easy to measure the angular distance between wires.
    > If all you want to do is measure altitudes above the sea horizon, don't
    > bother with an inverting scope. Same if you only measure short lunar
    > distances. But if you want to accurately measure the longer lunar
    > distances, or do accurate work with an artificial horizon, you'll find
    > the inverting scope invaluable. Just don't let the thing drive you crazy
    > at first. With experience you'll learn to like it a lot.
    > My guess is, a right-side-up scope with a reticule would be far more
    > expensive. That is, one with comparable optics.
    > Bruce
    s/v Mutiny
    Rhodes Bounty II
    lying Oriental, NC

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