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    Re: Star Finder 2102-D
    From: Bill B
    Date: 2008 Oct 17, 18:46 -0500

    chempro1---.com kindly responded to the question below:
    
    > If you look closely you will see that the center circle is the
    > celestial equator and refers to declination of the body.
    
    Believe me, I have looked closely.  I require reading glasses or some other
    visual aid to read the star names on the base. 
    
    Regarding the red overlay (on my unit) the circles are concentric about the
    pin, 0d (declination) coinciding with (albeit with a bit of slop) the
    celestial equator on the base. The celestial equator is not labeled as such
    on my red overlay but is so labeled on the base.
    
    My question, perhaps poorly stated, regards the outer markings on *my* red
    disk (used for plotting the moon or planets, or determining the RA/SHA and
    declination of a star not on the base).
    
    On the outer rim of my red overlay's north side, starting with 0d at the
    slot, (moving left with 0d pointing toward the deck) progresses from 0d W to
    180d, then declines through  170 east back to the slot. A striking
    resemblance to longitude, yes?
    
    What are the practical uses?
    
    Thanks
    
    Bill B
    
    
    
    
    
    > On Oct 8, 4:30�pm, Bill  wrote:
    >> Regarding the red overlay used for plotting the moon or planets, or
    >> determining the RA/SHA and declination of a star not on the base. �It also
    >> has what appear to be east and west longitudes scales. �What is the use(s)
    >> of this scale?
    
    
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