Modified gregorian astronomical telescope

Details Modified gregorian astronomical telescope Modified gregorian astronomical telescope

2006-09-15

2009-06-30

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Compound lens system

Telescope

C359S365000

Reexamination Certificate

active

07554728

ABSTRACT:
An optical system resembling a modified Gregorian astronomical telescope is disclosed in the specification and drawings. Lenses are used in the inter-focal region to modify the optical characteristics of the system. The use of such inter-focal lenses, can, for example, flatten the image plane of the field thereby increasing the field of view of the telescope.

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Gontcharov, Alexander, “Survey of Possible Optical designs for an Extremely Large Telescope with a Spherical or an Aspherical Primary” technical report, Lund Telescope Group, Lund University [online], Jan. 1999 [retrieved on Jul. 2, 2008]. Retrieved from the Internet <URL: http://www.astro.lu.se/˜torben/euro50/publications/index.html>.
Ceravolo, Peter, “An All-Spherical Catadioptric Gregorian Design For Meter Class Telescopes.” Ceravolo Optical Systems [online], Apr. 2005 [retrieved on Jul. 2, 2008]. Retrieved from the Internet <URL: http://www.ceravolo.com/design/cat—greg.htm>.

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