The Celestial Sphere

A scaled universe is created as sphere. It includes graticule lines, plus it can be zoomed and rotated. For web viewing, it is best to show the sphere as an ellipse. Therefore a Mollweide projection in employed.
Scenerio: Use cursor to rotate the universe and the mouse wheel to zoom.

SVG Source:

Javascript:
OK in:IE11/CH41/FF35
Rotation:°