"There is an illumination of the "Spera secundum fratrem J. de Pecham archiepiscopum," executed not long after the archbishop's death. In the centre is the Mouth of Hell, inscribed "Infernus." Round it are concentric circles, and on the top God sitting in an attitude of benediction. The circles are thus named Spera terre, coloured green, Spera aque, blue with white waves, Spera aerie, yellow Spera ignis, red, Celum Lune, Celum Mercurii, Celum Veneris, Celum Solis, Celum Martie, Celum Jovis, Celum Saturni, Celum Sidereum, sive Stellarum, Celum Crystallinum, sive Applanes, Celum Medium inter empireum et cristallinum motum motu simplicissimo, Celum empireum fixum et in motum, in quo est tronus Salomonis et locus Dei et Spirituum ...The Celum Medium is white. The Celum Empireum of a purplish colour, wider than the others, with 10 circles on it alternately red and yellow. The cusped circle, in which is placed the throne of God, cuts into this sphere and rests on the Celum Medium. The Deity has long hair and beard... The throne is ornamented with round headed apertures like windows. The background is blue. The description, whether written by the archbishop or not, no doubt contains his views on astronomy in a few words."