Discovery and exploration of the Solar System Domenico Cassini later discovered four more moons of Saturn and the Cassini division in Saturn's rings. Edmond Halley realised in 1705 that repeated sightings of a comet were recording the same object, returning regularly once every 75–76 years. This was the first evidence that anything other than the planets orbited the Sun. Around this time (1704), the term "Solar System" first appeared in English. In 1781, William Herschel was looking for binary stars in the constellation of Taurus when he observed what he thought was a new comet. Its orbit revealed that it was a new planet, Uranus, the first
Goode Solar Telescope through the Fraunhofer lines at 656.3 nm (H-alpha), 630.2 nm (Fe), and 588.9 nm (Na). Per scan step multiple images frames are captured that also get processed for enhanced image detail. A dual Fabry–Pérot imaging interferometer for the near-infrared. A cryogenic Czerny-Turner spectrograph for the 1 to 5 µm regime. A scanning echelle long-slit spectrograph. Goode Solar Telescope The Goode Solar Telescope (GST) is a scientific facility for studies of the Sun named after Philip R. Goode. It is the solar telescope with the world's largest aperture in operation. Located in Big Bear Lake; California, the Goode Solar Telescope is