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    Re: star-to-star distances
    From: Alexandre Eremenko
    Date: 2004 Sep 29, 21:57 -0500

    Fred,
    Finally I obtained a relally good measurement for
    Vega-Arcturus distance!
    
    Sept 29, GMT 0h5m:
    Arcturus-Vega, alt(Arctur)=30d, alt(Vega)=83.
    Galileo scope, 4x40:
    SEXT DIST           ERROR
    59d06.5'            -0.6'
    59d06               -0.1'
    59d08.3'            -2.4'
    59d06.6'            -0.7'
    59d05.8             +0.1'
    59d05.7             +0.2'
    Kepler (inverting) scope 7x30 with cross-hairs:
    SEXT DIST           ERROR
    59d05.8'            +0.1'
    59d06.0'            -0.1'
    59d05.9'             0.0'
    59d05.8'            +0.1
    59d05.8             +0.1
    
    Computed distance (corrected for refraction): 59d05.9'
    
    This I call a good result! You can almost see my learning curve
    in this table:-)
    And I have to withdraw some of my early statements about the
    inverning scope. It is not so bad, after all.
    
    The stars are indeed surrounded by "hairs of light", like a corona,
    but in the middle of this corona there is really a sharp point.
    And the cross hairs indeed help to keep the whole action in the middle
    of the field of view.
    
    It is interesting: I am somewhat confused because the Russian manual
    calls the Galileo scope "the night scope" and the inverting one
    "the day scope". The manual says: "attach the inverting one for Sun
    observations and the Galileo for night observations.
    
    Now I feel like doing just the opposite.
    
    And it is easier than learning to play piano indeed:-)
    
    Alex.
    
    On Wed, 29 Sep 2004, Fred Hebard wrote:
    
    > Part of it is practice, lots of practice.  It's not as hard as learning
    > to play a piano, but it takes some proficiency.
    
    
    

       
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