How do the coordinates of the points compare?If they are similar then the processing is probably fine and you are dealing with different ways part of ...

Nautical almanac lists the moon, so within it's limited accuracy it can be used for ephemeris data. One thing to watch out for is the large amount of...

You can think of it as just another way of reporting a bearing. If I run south from a given corner with one variation, that describes exactly what wa...

So that picture looks to be like a man with a solar compass.That is something I am really have some interest in.Tell me the story?(I have a few videos...