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    Re: Lunar Distances with Alex's SNO-T
    From: Bill B
    Date: 2006 Nov 01, 22:47 -0400

    I wrote:
    > In that post he states, "Poor telescope optics might  present a problem."  I
    > remain convinced, at least with my scope and any I have tested, as well as
    > the observations of others on the list, that changing the focus can affect
    > side error and IE.  So if we focus the scope for the smallest dot, we can
    > only check IE at that focus point.  Yes?  So it might not remain the same
    > once we refocus for our eyes?
    My practical (photographic) knowledge of optics is workable, but my
    theoretical knowledge is pretty lame.
    Would it be possible to focus the scope to the users eye, and then adjust
    the distance of the laser source from the rear element to obtain focus on
    the distant target?
    Hopefully the only dumb question is one not asked. 
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