Chris Lusby Taylor wrote: > > > Alternatively, when delineating a dial, pre-distort it as ChiLean did, > by a little less than a minute. So, the sides of the noon gap should > indeed converge. > Which is roughly what I recommended in my introduction to this topic. For a large dial, where this effect is most pronounced, set the noon hourlines and tapered noon gap at the equinox by solar observation using your best estimate of the reading edge of the shadows. Then the remaining hourlines can be set at their calculated angles from the noon lines.
Tony Moss --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
