A 30 meter cassegrain telescope with spherical optics and a 3° field

J. H. Burge; J. R.P. Angel

doi:10.1117/12.459959

A 30 meter cassegrain telescope with spherical optics and a 3° field

J. H. Burge, J. R.P. Angel

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

We present a concept is for a fully steerable, quasi-Cassegrain telescope in which the 36 m primary and secondary mirrors are parts of concentric spheres. The 15-m secondary, supported 36 meters above the primary yields a 3°, Cassegrain focal surface, 7 meters in diameter. Though the spherical aberration is large (about 2 arcminutes), many small fields are fully corrected locally. Multiple small units are placed in the focal surface at regions of interest to correct a field of view of a few arcseconds. These can be used for integral field spectroscopy of for direct imaging using adaptive optics. Hundreds of these units could be placed on the focal surface during the day to allow all-night exposures of the desired regions. We believe that this design offers an economical system that can be dedicated for several important types of astronomical observation.

Original language	English (US)
Pages (from-to)	574-582
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4840
DOIs	https://doi.org/10.1117/12.459959
State	Published - 2002
Event	Future Giant Telescopes - Waikoloa, HI, United States Duration: Aug 26 2002 → Aug 28 2002

Keywords

Astronomical optics
Optical design
Telescope

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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Cite this

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abstract = "We present a concept is for a fully steerable, quasi-Cassegrain telescope in which the 36 m primary and secondary mirrors are parts of concentric spheres. The 15-m secondary, supported 36 meters above the primary yields a 3°, Cassegrain focal surface, 7 meters in diameter. Though the spherical aberration is large (about 2 arcminutes), many small fields are fully corrected locally. Multiple small units are placed in the focal surface at regions of interest to correct a field of view of a few arcseconds. These can be used for integral field spectroscopy of for direct imaging using adaptive optics. Hundreds of these units could be placed on the focal surface during the day to allow all-night exposures of the desired regions. We believe that this design offers an economical system that can be dedicated for several important types of astronomical observation.",

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AU - Burge, J. H.

AU - Angel, J. R.P.

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AB - We present a concept is for a fully steerable, quasi-Cassegrain telescope in which the 36 m primary and secondary mirrors are parts of concentric spheres. The 15-m secondary, supported 36 meters above the primary yields a 3°, Cassegrain focal surface, 7 meters in diameter. Though the spherical aberration is large (about 2 arcminutes), many small fields are fully corrected locally. Multiple small units are placed in the focal surface at regions of interest to correct a field of view of a few arcseconds. These can be used for integral field spectroscopy of for direct imaging using adaptive optics. Hundreds of these units could be placed on the focal surface during the day to allow all-night exposures of the desired regions. We believe that this design offers an economical system that can be dedicated for several important types of astronomical observation.

KW - Astronomical optics

KW - Optical design

KW - Telescope

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A 30 meter cassegrain telescope with spherical optics and a 3° field

Abstract

Keywords

ASJC Scopus subject areas

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