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30 January 2003 Clavius: an operational concept in relay telescopes
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A new interactive approach in the field of optical calculations has now resulted in a new fast telescope design using exclusively spherical surfaces, and which offers small central obstruction and wide diffraction-limited field. It is a new concept of relay telescope, based on a new relay lens design that allows sequential optimization of the essential requirement, i.e. image quality. It is possible to adjust successively the monochromatic axial spot, the monochromatic off-axis spot, the polychromatic axial spot and the polychromatic off-axis spot. Each adjustment is obtained interactively by ray-trace software, each being almost completely independent, except for the last one which requires repeated resetting of the previous adjustments. We will explain the main principles of operation and present the results obtained for a 500 mm diameter telescope and comarative performance with well-known Newton and Richey-Chretien equivalent designs.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michel Paramythioti and Paul-Louis Vinel "Clavius: an operational concept in relay telescopes", Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003);


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