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Brad wrote:

"I just use my to determine which stars would be practical.  Since my
latitude is 40 north, it places me right between the N35 and the N45
blue templates.  Therefore, the altitudes and azimuths given really
don't do the trick. "

And:
"Once I have the list, I swap over to the Bygrave to calculate the
altitude and azimuth of each.  That way, when I am ready to swing the
arc, I can preset the sextant to the expected altitude and point via
the compass. Generally, the star is right in the telescope! "

A trick you can use to get better accuracy for latitudes between the
template latitudes is to set LHA Aries (either using the almanac
method or my modification or Chief Franklin's modification) and then
take the template off the center pin and slide it north of south until
the zenith is aligned with your DR latitude. This isn't perfect but
will be accurate enough for you to be able to preset your sextant.

gl



On Aug 13, 5:43�pm,  wrote:
> I think your Modification is wonderfull for the fully trained professinal 
navigator. I would have used it. Mine Modification is more for the others 
that could not or would not even own a 2102-D. I made it to use as a Training 
Aid to teach CELO Navigation. I found that I could teach mid-school Kids to 
set up for the stars and to observe the movement path that bodied make. I am 
aiming at the kids and professional, navigators and astronomer. I belong to 
the " Foundation for the promotion of the art of navigation' and the goad of 
keeping CELO NAVIGATION alive and well.
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