[amsat-bb] Re: rotator questions

[jmfranke@cox.net]

Or go to:

http://www.usno.navy.mil/USNO/astronomical-applications/data-services/alt-az-us

enter your location and get the azimuth of the Sun for every 10 minutes so you do not have to worry as much about clouds or trees, etc.

John WA4WDL


---- Daniel Schultz <n8fgv at usa.net> wrote: 
> To find true north at your QTH:
> 
> Go to
> http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day-us
> 
> Enter your nearest city and state into the menu
> 
> If you prefer to enter latitude and longitude, or if you are outside of the
> USA, go to
> http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day-world
> 
> You will get a chart like this for your location:
> 
> Thursday
> 13 August 2009        Eastern Daylight Time         
> 
> 	SUN
> Begin civil twilight       5:50 a.m.                
> Sunrise                    6:19 a.m.                
> Sun transit                1:12 p.m.                
> Sunset                     8:05 p.m.                
> End civil twilight         8:33 p.m.                
> 
> 	MOON
> Moonrise                  11:04 p.m. on preceding day
> Moon transit               6:29 a.m.                
> Moonset                    2:04 p.m.                
> Moonrise                  11:44 p.m.                
> Moonset                    3:13 p.m. on following day
> 
> Make a note of the "Sun transit" time. Set your watch by WWV or some other
> reliable time source. Drive a stake in the ground (use a plumb line to make
> sure it is vertical). Go outside at the exact moment of the sun transit, at
> that time the shadow of the stake (or your tower if it is vertical) will be
> true north. Mark the ground at that exact time.
> 
> Dan Schultz N8FGV
> 
> 
> 
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