• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • jordan barton
  • Pearl Sutton
  • Steve Thorn
  • Leigh Tate
  • r ranson
  • paul wheaton
stewards:
  • Nicole Alderman
  • Greg Martin
  • Mike Haasl
master gardeners:
  • John F Dean
gardeners:
  • Carla Burke
  • Jay Angler
  • Nancy Reading

building a simple device to figure out solar angles: will this work?

 
pollinator
Posts: 1731
Location: Denver, CO
91
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I need a simple device to figure out where the sun will be in the sky at any given day and time from any location on my property.

My idea is to have a smooth wooden pole, maybe six feet high, with a large protractor attached to the top. The protractor would be attached to the post by a nail through a hole in the exact center of its arc. A piece of PVC pipe would be attached to the top of the protractor to look through. Near the base of the post a disc marked in 360 degrees would be fitted around it. So, once I found true north and south by lining up straight poles at true noon, I could use charts of the sun's altitude and azimuth to find the sun's position. The post would be placed and leveled. The bottom disk could be rotated till the whole device was a certain number of degrees away from true solar south, and the protractor could be moved up or down till it pointed to a certain altitude.

Of course, I would be careful to avoid looking at the sun through the PVC!

Then I would be able to tell if the sun would REALLY clear that tree on noon of March 21st! (Or whatever.)
 
steward
Posts: 6440
Location: United States
2904
transportation forest garden tiny house books urban greening the desert
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I think your idea could work, and you may be interested in RimStar's DIY elevation/azimuth tool guide; it explains how to build your own elevation/azimuth shade finder. Building off of that tool, a simple sun line up tool could be mounted on to the top protractor of the elevation.azimuth shade finder to avoid looking at the sun directly. Here is a short YouTube video by RimStar explaining how to build the sun finder tool:
 
Gilbert Fritz
pollinator
Posts: 1731
Location: Denver, CO
91
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thanks for those videos; they are really cool and helpful!
 
steward
Posts: 2482
Location: FL
114
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You are describing a Clinometer.
 
gardener
Posts: 1081
Location: Washington State
620
forest garden trees rabbit earthworks composting toilet fiber arts sheep wood heat woodworking rocket stoves homestead
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I had the privilege to chat with Paul and Josiah today before the Greenhouse Build Zoom and got more info on building a solar finder BB.  
I put this page together with information I found online that related to the information Paul and Josiah shared with me.

Dave, I look forward to watching your video - tomorrow.  I'm calling it a night.
 
Think of how stupid the average person is. And how half of them are stupider than that. - Carlin But who reads this tiny ad?
Pre-order for "Tour of Wheaton Labs, the Movie!"
https://permies.com/w/tour
reply
    Bookmark Topic Watch Topic
  • New Topic