Hello Damià You have to see how accurate is the satellite photo in google earth oriented with respect to the true north direction.
Alex On Mon, Jun 8, 2009 at 2:53 PM, Damia Soler Estrela <[email protected]> wrote: > Hello: > > You are talking about physical declinometers in order to know the > wall declinations, I think that is the most acurrate method, but I have > been using google earth, you can see the wall of the buildind or the > aligned street, and could calculate the declination from North? (You > have a rule to measure the x and y axis, or read the coordinates). > > What do you think about the accuracy of this method? > Do you have any information about the accuraccy of google earth in > order to measure declination? > > > Best regards > Damià > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > >
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