Gregorian telescope

Definitions

  • WordNet 3.6
    • n Gregorian telescope a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror
    • ***
Webster's Revised Unabridged Dictionary
    • Gregorian telescope (Opt) a form of reflecting telescope, named from Prof. James Gregory, of Edinburgh, who perfected it in 1663. A small concave mirror in the axis of this telescope, having its focus coincident with that of the large reflector, transmits the light received from the latter back through a hole in its center to the eyepiece placed behind it.
    • Gregorian telescope a form of reflecting telescope. See under Gregorian.
    • ***

Usage


In science:

The collaboration is investigating different layouts for the combiner, possibly including lenses, starting with classical astronomical telescope designs such as Gregorian and Cassegrain, and bearing in mind the constraints above.
QUBIC: The QU Bolometric Interferometer for Cosmology
We are therefore currently studying the optimization of an off-axis Gregorian telescope.
QUBIC: The QU Bolometric Interferometer for Cosmology
The MAX instrument consists of an off-axis Gregorian telescope and a bolometric photometer mounted on an attitude-controlled balloon-borne platform which makes measurements at an altitude of 36 km.
The Cosmic Microwave Background Anisotropy Experiments
The Gregorian telescope consists of a 1-meter primary and a nutating elliptical secondary.
The Cosmic Microwave Background Anisotropy Experiments
The reflector design incorporates two back-to-back off-axis Gregorian telescopes with 1.5-m primary reflectors and 0.52 m secondary reflectors.
The Cosmic Microwave Background Anisotropy Experiments
***