The Astronomer (Dutch: De astronoom) is a painting finished in about 1668 by the Dutch Golden Age painter Johannes Vermeer. It is in oil on canvas.The Astronomer is a baroque portrait painting by the Dutch painter Jan Vermeer painted around 1668. It is an oil painting on canvas with dimensions of 51 cm × 45 cm. The painting is stored in the Louvre. Represents an astronomer. Portraits of scientists were a popular theme in 17th century Dutch painting