The Astronomer is an oil-on-canvas painting that was completed in 1668 by Johannes Vermeer, a painter of the Dutch Golden Age. Measuring 51 cm × 45 cm, The Astronomer is now in the collection of the Louvre in Paris. Johannes Vermeer, 1664 — painted at 32. Canvas and oil paint. 50.8 × 46.3 cm. In the Department of Paintings of the Louvre. Baroque. Wiki link