The sculptured Dendera zodiac (or Denderah zodiac) is a widely known Egyptian bas-relief from the ceiling of the pronaos (or portico) of a chapel dedicated to Osiris in the Hathor temple at Dendera, containing images of Taurus (the bull) and the Libra (the scales). This chapel was begun in the late Ptolemaic period; its pronaos was added by the emperor Tiberius. This led Jean-Fran癟ois Champollion to date the relief correctly to the Greco-Roman period, but most of his contemporaries believed it to be of the New Kingdom. The relief, which John H. Rogers characterised as "the only complete map that we have of an ancient sky", has been conjectured to represent the basis on which later astronomy systems were based. No artist credited, undated.