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    Re: Lunar Scopes
    From: Alexandre Eremenko
    Date: 2005 Feb 14, 20:13 -0500

    Dear Fred,
    
    On Mon, 14 Feb 2005, Fred Hebard wrote:
    
    > I think Joel intended no insult here.
    
    Of course, I know. Still I wanted to oppose in the strongest
    way that anything I said on this list could be motivated
    by any "nationalistic feelings", especially Russian ones:-)
    
    > I would just as soon not reveal how much I paid for
    > an inverting scope.
    
    Can you reveal whether you really bought a separate scope?
    I mean without a sextant?
    
    > BTW, I believe it is 6x not 7x, according to one manual
    
    There is something strange about it: my manual says 6x to 7x,
    whatever this means.
    
    > I've not tried to measure its magnification yet, and don't know how,
    
    That's easy: measure the focus distance of the objective lens,
    then that of the eyepiece, then divide one onto another.
    
    > Joel has a good point that the box has the letters,
    > "SNO-T," on it.  It
    > is natural to then advertise it as a "SNO-T,"
    > so that the buyer is not
    > confused when he receives a "SNO-T" but had ordered a "SNO-T."
    
    I have nothing to add to what I said.
    What if a buyer orders "Tamaya" and then receives something where
    the Japanese characters are written instead?
    
    > In microscopes, various measuring devices are
    > inscribed on glass disks
    
    Yes, you can inscribe the wires on glass (in a Kepler scope!)
    but not in a Galileo scope.
    There is no difference, whether you inscribe them on glass
    or put actual wires. Except that additional glass will absorb
    additional light.
    
    Alex.
    
    
    

       
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