[TowerTalk] And now for something completely different(TrueNorth)

[Jim Lux]

At 09:45 PM 9/16/2006, K8RI on TowerTalk wrote:



> > At 04:49 PM 9/16/2006, Jim Miller wrote:
> >>According to "true north", is the North Star really at 0.00 degrees from
> >>north?  Is it our actual "true north"?
> >>73, Jim
>
>Yah, but right or left?  I hate to align the 30 degree wide main lobe on my
>antenna 3/4 of a degree in the wrong driection. That'd make it 1.5 degrees
>off optimum<:-))

Leading to a loss of 0.03 dB.. you know how important those 
hundredths of an S-unit are.

  And then, the bird repelling properties of the owl will be affected too.

Actually, though, the other link I posted (about using polaris) is 
fascinating.. It makes the point that with a standard theodolite 
telescope, Polaris is visible in the daytime, and because it moves a 
lot slower (angular wise) than the sun, it's easier to get a good 
north direction.  I'll have to give it a try.



>Roger Halstead (K8RI and ARRL 40 year Life Member)
>N833R - World's oldest Debonair CD-2
>www.rogerhalstead.com
> >
> > No. The north star makes a little circle about 1.5 degrees in
> > diameter around the true north point. (RA 02 31 49.08, Decl +89 15
> > 50.8 in J2000 coordinates) so it's about 3/4 degree off celestial north
> > pole.
> >