Astrolabe, Avebury Manor, Avebury

A close up of the astrolabe, an instrument to locate and predict the future locations of the sun, moon, stars and planets.
Nikon D2Xs + Nikkor-O.C Auto f/2 35mm lens. According to Thomas Pindelski, (see pindelski.org/Photography/2012/05/05/nikkor-o-35mm-f2-lens/) 'This lens is fully the equal of any Leitz or Leica 35mm Summicron on a Leica M, regarded by many as the standard at this focal length. Having owned and used 8 element and 6 element spherical Summicrons and the Aspherical model, I can testify to this.'