Contact information:
Mailing address: Department of Astrophysics/IMAPP, Radboud University, PO Box 9010, 6500 GL Nijmegen, The Netherlands
Visiting address: Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
Office: Huygensgebouw 02.720
email: s dot larsen at astro dot ru dot nl
Here you can find my translation of Kepler's book Dioptrice in which Kepler provided the first theoretical description of the telescope. Published by the Radboud University Press.
"..mihi non multo minus admirandae videntur occasiones, quibus homines in cognitionem rerum caelestium deveniunt; quam ipsa Natura rerum caelestium" - Kepler, Astronomia Nova.