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--- Begin Message ---Here is the complete article. http://articles.adsabs.harvard.edu//full/1961JRASC..55...49S/0000054.000.html putow...@yahoo.com > On May 9, 2017, at 8:50 PM, Michael Ossipoff <email9648...@gmail.com> wrote: > > I'm not asking about the instructions for constructing Capuchin and Universal > Capuchin dials. I'm asking about the principle, the explanation, the > justification, for their construction. > > Some websites have said or implied that it has to do with an orthographic > planisphere. I'm familiar with the use of a universal planisphere, an > azimuthal projection of the celestial sphere in equatorial-aspect. ...but it > isn't entirely clear how that relates to the Capuchin dials. > > I found a handwaving explanation on the web. I've pasted its diagram, and > some of its "explanation", below in this e-mail. > > The explanation says that the diagram below, an orthographic projection of > the celestial-sphere, looks just like a Capuchin dial. And that's supposed > to be an explanation. > > So, how does an orthographic projection of the celestial-sphere lead to a > justification and explanation of the construction of a Capuchin or Universal > Capuchin dial? > > Can anyone here explain that? If so, the explanation would be appreciated. > > Michael Ossipoff > > <image.png> > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial >
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