So we have a constellation which can be drawn and Indian tradition places this at the polar position.
I can't see any justification in trying to bring India into a discussion on Plato's Atlantis narrative, and you haven't demonstated how such a diagram is consistant with known Greek knowledge and methodology.
There was No drawn map of this that anyone could copy, I have also, I thought made that clear and certainly have not made such a claim. The diagram in a pictorial sense would have been new and hence there will be no such sky map to copy. In any case the diagram emerges in narrative form in the Atlantis tale.
You haven't provided any credible evidence that Plato was in the least concerned with the constellation Hercules around celestial North or had the capacity to envision any such diagram, and have disregarded his stated premise of seven geocentric celestial spheres accorded to the Sun, moon and planets encompassing the entire sky.
The diagram, as clearly stated is not precise but it is close enough to accept that the Atlantis model emulates the circling stars of the constellation as described. It is probably as close as could be got and I don't thing that it would be very difficult to obtain the accuracy described. I believe the Greeks were smarter than you are allowing.
It's inaccurate and irrelevant...stick to what Plato's concerns were with, don't invent your own.
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Not so. The stars are attached to the polar position by lines in the Indian cosmology as indeed was the case in China. I believe you will eventually discover that Plato's seventh outer celestial sphere gives that position. After all, the stars appeared to rotate around the pole star, this was generally accepted and described in some detail in the Indian material and visually appears to be the case now as then, and here you are describing Plato's version where they are suspended by chains. Hence, as they circle the polar position, from where are they suspended? The stars closest to the pole have to have the same anchorage point as those further out, they all circle the same point, so just how do you explain where that anchorage may be if not at the pole?
It was the outer sphere that was tilted upon its axis and rotated in diagonal motion according to Plato, with the attached stars following this motion, they weren't travelling along their own lines or pathways...it's no use trying to make Plato's model fit onto an Indian model.