A telescope for ultraviolet photometry

Details A telescope for ultraviolet photometry A telescope for ultraviolet photometry

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982tup..rept.....r&link_type=abstract

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Physics

Optics

Balloon-Borne Instruments, Ultraviolet Astronomy, Ultraviolet Telescopes, Angular Resolution, Cassegrain Optics, Geometrical Optics, Newton Theory, Reflecting Telescopes

Scientific paper

A design of a 45 cm telescope to be flown on a stratospheric balloon to study Southern Hemisphere stars in ultraviolet radiation is presented. A Cassegrain and a Newtonian system are considered. The Cassegrain system consists of two parabolic mirrors and the Newtonian system is made of a parabolic mirror (primary) and a plane (secondary). Using the ray tracing method, the spot diagrams are constructed for both systems and the incident rays are considered along and away from the optical axis. Both systems present a good angular resolution. However, for the purpose of construction of the telescope at INPE, the aberrations produced in the Newtonian system alone have been calculated.

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