David in Prayer: Penitential Psalms and Litany, from the "Black Hours" of the Virgin: Matins, c. 1480 (Bruges). MS M.493, Fols. 76v–77r. The Morgan Library & Museum, New York. Links to page that will zoom. A great look at the medieval realm of light in the sky that C.S. Lewis describes in "The Discarded Image."