Plate, 12 figures of nebulas and other celestial objects by unknown artist Plate of twelve figures in grey watercolour illustrating various nebulas and celestial objects observed by Herschel. Subject: Astronomy Published in Philosophical Transactions as 'Astronomical observations relating to the construction of the heavens, arranged for the purpose of a critical examination, the result of which appears to throw some new light upon the organization of the celestial bodies'. Written by Herschel at Slough near Windsor. Read 20 June 1811. [1811]