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HO 208 divides the navigational triangle MPZ into two angles by droping a
perpendicular ZD from the observers Zenith upon the circle of declenation.
Called "a".

From H.O. 208, Fifth Edition, 1935

Price listed as $1.20

Dan Hogan
dhhogan1@earthlink.net


> [Original Message]
> From: Bill 
> To: 
> Date: 11/2/2005 12:47:39 PM
> Subject: Re: Azimuth Formula Questions
>
> Doug wrote>
>
> > Both systems(208 + 211)are
> > based to reduce sights by using t(MA)instead of the way the newer
tabulation
> > methods,except HO-214,are formatted. What is really nice about the
HO-211
> > system is a person only needs the HO-211 data book (35 pgs) and a NA to
> > reduce sights from any band of latitude. One can forget about carrying
all
> > the volumes of the newer systems onboard. And both are just as
"accurate" as
> > are the newer tabulation methods of sight reduction "in the real world".
>
> Thank you all.
>
> If I understand, HO211 divides the triangle into 2 right triangles.  Is
that
> the case with 208 as well?
>
> My regular cruising waters are the Great Lakes. Because of the proximity
of
> shores, light pollution from Chicago etc., my initial choice was 229 over
> 249 as 229 appeared to offer more choice in body selection.  There
certainly
> is a case to me made for one small volume.  My cruising grounds (Great
> Lakes) require two 229 volumes.  Head south and I need a bookmobile to lug
> them all;-)
>
> With Lake Michigan boats now on the hard, and dinghy sailing/racing about
> done for the season, I hope to learn more about 208/211 when the snow
flies.
>
> Bill

   

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