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    Re: Trombone Kamal Prototype
    From: Greg Rudzinski
    Date: 2009 Jun 4, 20:18 -0700

    Trombone Kamal sun observation data set 6/4/09
    34� 10'N  119� 14'W  from shore at a 20ft.height of eye.
    
    Altitude    Intercept
    
    13� 25'     2.7'A
    13� 05'     7.3'T
    11� 50'     4.6'A
    11� 01'     2.0'T
    10� 00'     9.7'T
     9� 14'    14.7'T
     7� 56'     2.1'A
     7� 05'     6.3'T
     6� 10'     4.1'T
     5� 24'     6.3'T
    
    Avg.        4.1'T   Scatter 19.7'
    
    On Jun 3, 9:57�pm, Greg Rudzinski  wrote:
    > I was able to test the Trombone Kamal prototype at the beach today and
    > found that observing the sun through scotch tape and plex wasn't going
    > to work and that an additional reference mark was needed at 3 inches.
    > The clear scotch tape was removed and the reference marks were grooved
    > in with a straight edge and razor blade then blackened with a felt tip
    > pen. Three observations were successfully performed before sunset
    > yielding �intercepts inside of 10 miles vs. GPS but more testing will
    > need to be done to confirm accuracy. The concept is showing promise.
    >
    > On Jun 3, 10:52�am, Greg Rudzinski  wrote:
    >
    > > --- On Wed, 6/3/09, Greg Rudzinski  wrote:
    >
    > > > From: Greg Rudzinski 
    > > > Subject: TROMBONE KAMAL PROTOTYPE
    > > > To: gregrudzin...---.com
    > > > Date: Wednesday, June 3, 2009, 10:46 AM
    > > > The Trombone Kamal gives the 9th
    > > > century Kamal a 20th century facelift.
    >
    > > > How to make your own.
    >
    > > > Materials:
    > > > - 3.5 x 5" x 1/8" white plex which is transparent enough to
    > > > see a faint image of the sun through it at low altitudes.
    >
    > > > - Standard metal tape measure.
    > > > - Electrician tape (black).
    > > > - Scotch tape (clear).
    > > > - Black felt tipped pen.
    >
    > > > 1. Lay a strip of electricians tape along the 3.5" base of
    > > > plex. This will be the horizon reference line.
    >
    > > > 2. Using a black felt tipped pen precisely draw in lines
    > > > spaced 1", 2", and 4" above the electrician tape horizon
    > > > reference.
    >
    > > > 3. Place clear scotch tape over black lines to fix and
    > > > protect from smudging.
    >
    > > > How to use.
    >
    > > > � ���Place the metal tape measure end
    > > > centered just below the horizon reference. Hold in place
    > > > with index finger and thumb then trombone the tape measure
    > > > out until pressed below the eye. Adjust the tape measure in
    > > > or out until the sun and horizon are bracketed by reference
    > > > lines. The hs altitude will be the inverse tangent of 1", 2"
    > > > or 4" over the tape measure reading. A K&E 4080-3 10"
    > > > slide rule works well for this calculation.
    > > > � ���Relative bearings, doubling the
    > > > angle on the bow, and distance off by vertical angle are
    > > > piloting applications that can also be performed by the
    > > > Trombone Kamal.
    >
    > > > � � �
    >
    > > �IMG_4414.JPG
    > > 629KViewDownload
    >
    > > �IMG_4415.JPG
    > > 980KViewDownload
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