A vertical erection.
Submitted: Sunday, Jan 03, 2010 at 15:01
ThreadID:
74843
Views:
3855
Replies:
10
FollowUps:
11
This Thread has been Archived
Member - Royce
When working out where NORTH is ..... I have just discovered that you need to erect the pole VERTICALLY!!!!!
I am putting up a shed which will have 10 solar panels mounted on its roof. I have discovered that a star post [picket, dropper whereever you grew up] only casts a small shadow at 1 pm EDST.
If the post is not vertical as small degree of inaccuracy becomes a GIANT mistake over an 18meter length..... sigh
Reply By: StormyKnight - Sunday, Jan 03, 2010 at 20:47
Sunday, Jan 03, 2010 at 20:47
At my location today the sunrise & sunset times are as below....
03/01/2010 Rise 0601 Set 2027 Eastern Summer Time
So the time of North would be half way between these two times....
OR about 1314......So 1pm is probably close enough :)
You can work out your sunrise/sunset times from here....
http://www.ga.gov.au/geodesy/astro/sunrise.jsp
Cheers
PS have you tried Google Earth for your location to show north?
AnswerID:
397501
Reply By: GerryP - Sunday, Jan 03, 2010 at 22:54
Sunday, Jan 03, 2010 at 22:54
Hi Royce,
You could just use your analogue watch as follows:
"Finding north using a watch.
1. Start by pointing your finger directly at the sun, then drop it straight down until you are pointing at a spot on the horizon.
2. Point the 12 on the watch at
the spot on the horizon that you found in step 1.
3. North is halfway between the 12 and the hour hand.
Please note, this will not work
well in the tropics.
During daylight savings time, use 1 instead of 12 on your watch."
Cheers
Gerry
AnswerID:
397523
Follow Up By: landseka - Monday, Jan 04, 2010 at 11:05
Monday, Jan 04, 2010 at 11:05
That has ALWAYS worked for me.
Neil
FollowupID:
666426
Follow Up By: landseka - Monday, Jan 04, 2010 at 11:06
Monday, Jan 04, 2010 at 11:06
And this is the way I line up my sat dish every stop when travelling.
FollowupID:
666427
Follow Up By: StormyKnight - Monday, Jan 04, 2010 at 23:00
Monday, Jan 04, 2010 at 23:00
I use my watch as
well.....it has a compass function :)
FollowupID:
666557