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Celestial Sphere with Analemma JS Model DocumentsThis material has 3 associated documents. Select a document title to view a document's information. Main DocumentCelestial Sphere with Analemma JS Model
written by
Todd Timberlake and Wolfgang Christian The Celestial Sphere and Analemma JavaScript Model simulates the Two Sphere Universe theory of the Ancient Greeks. This theory supposes the stars to be fixed on the surface of a Celestial Sphere, with the spherical Earth at the center of this sphere. The simulation shows the motion of Sun and stars in this model, as well as the horizon plane for an observer on the spherical Earth. Two views are shown: one from outside the Celestial Sphere, and the other from the point of view of an observer on Earth looking up. Most of the characteristics of the simulation can be adjusted, including the tilt of the ecliptic relative to the equator, the latitude of the observer, the time of day and the time of year.
Published April 24, 2017
This file has previous versions. Primary DocumentsCelestial Sphere with Analemma Android App (beta)The Celestial Sphere with Analemma model packaged as a stand-alone Android App. Requires Android 6 or above and fast processor for 3D WebGL.
Released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license. Last Modified July 20, 2017
Source Code DocumentsCelestial Sphere with Analemma Source CodeJavaScript Easy Java Simulations source code.
Last Modified December 23, 2020
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