Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4842..106p&link_type=abstract
Specialized Optical Developments in Astronomy. Edited by Atad-Ettedgui, Eli; D'Odorico, Sandro. Proceedings of the SPIE, Volume
Astronomy and Astrophysics
Astronomy
Scientific paper
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.
Paramythioti Michel
Vinel Paul-Louis
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