Earth Sciences 1086F/G Lecture Notes - Lecture 5: Axial Tilt, Oort Cloud, Dwarf Planet
15 Apr 2016
School
Department
Course
Professor
Document Summary
Optical telescope gathers up light and allows you to examine an image at a focal position ! Refractor telescope: collect light by means of a glass lens ( or combination of lenses) Re ector telescope: collect light with a curved mirror. Largest telescopes are the two keck telescopes mount of mauna kea, hawaii. Canada uses the canada-france-hawaii telescope (cfht) on mauna kea, has produced many speculator images such as ones of the lagoon nebula. Hubble space telescope orbits 600km above earth. Non-optical telescopes collect every other kind of waves but those from 400nm - 700nm (i. e. gamma rays, x-rays, ultraviolet, infrared and radio waves) Rst non-optical telescope was built in 1931 and collected radio waves. Rst really large radio telescope was the 76m dish at jodrell bank in the uk called. Geostationary satellite: the satellite stays right over the same spot all the time. Escape velocity: the minimum velocity needed for an object to just overcome earth"s gravitational attraction.
