Gregorian telescope
Telescopio gregoriano
- Date
- 1663 (diseño) / 1673 (construcción) · confidence high
- Place
- London, England, United Kingdom
- Credited to
- James Gregory (design, 1663); Robert Hooke (first construction, 1673)
- Field
- Communication
What it is
A reflecting telescope with a concave primary mirror and a concave secondary mirror that produces an upright image; designed by James Gregory in 1663 but first built by Robert Hooke a decade later.
What it led to
- Practical reflecting telescopes alternative to the Newtonian design
- Use in solar observation and precision astronomy
- Later reflector designs such as the Cassegrain