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    Re: Star Finder 2102-D
    From: Will Ross
    Date: 2008 Oct 18, 17:42 -0700

    Determine from the Almanac the bodies declination and RA (RA=360deg-
    SHA,or GHAaries-GHAbody. Center red line template over star
    base,rotate until arrow is over RA.Plot body on 0deg meridian, use
    radial scale for declination.
    TO DETERMINE MERIDIAN ANGLE,t
    Center template and rotate until arrow is over LHAaries.Read meridian
    ansle, t,
    from red lines of template, east or west through 180deg.Meridian angle
    t is equal to LHA if west, 360-LHA if east. This is the only use of RA
    in the use of the 2102-D star finder.
    
    On Oct 17, 7:46�pm, Bill  wrote:
    > chemp...---.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?- Hide quoted text -
    >
    > - Show quoted text -
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