Telescopes were first invented around the year 1600 Galileo Galilei was an early astronomer who first used telescopes to view objects in our solar system He made many important discoveries including the moon was covered in mountains and Jupiter had 4 large moons ID: 384178
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Slide1
TelescopesSlide2
Telescopes were first invented around the year 1600.
Galileo
Galilei was an early astronomer who first used telescopes to view objects in our solar system. He made many important discoveries including: the moon was covered in mountains and Jupiter had 4 large moons.
Galileo, GalileoSlide3
Telescopes are instruments that collect and focus light and other forms of electromagnetic radiation.
Electromagnetic
radiation is the invisible energy waves on the electromagnetic spectrum.A telescope that uses lenses and mirrors to collect and focus visible light is called an optical telescope.
The
two main types of optical telescopes are refracting telescopes and reflecting telescopes.
Modern TelescopesSlide4
Electromagnetic SpectrumSlide5
REFRACTING
REFLECTING
A reflecting telescope, or reflector, uses mirrors instead of glass lenses. The mirrors bounce light rays to focus them.
These
were developed by Sir Isaac Newton around 1670.
The
majority of telescopes used today are reflectors
A refracting telescope, or refractor, is a telescope that uses glass lenses to collect and focus light into an
image
These glass lenses bends light rays to focus them.
These were the earliest type of telescopes, used by Galileo to study objects in our solar system
Refracting vs. Reflecting telescopesSlide6
Simply put,
r
adio telescopes are different from reflecting or refracting telescopes in that they detect radio waves instead of light wavesRadio TelescopesSlide7
Since Earth’s atmosphere blocks many wavelengths of invisible light, astronomers have placed telescopes in space.
These
telescopes include the Hubble Space Telescope, the Chandra X-Ray Observatory, and the Spitzer Space Telescope. These different telescopes each observe a different wavelength on the electromagnetic spectrum (the spectrum of all visible and invisible light).
Telescopes in SPACESlide8
Which is Which?
Use your textbook to find the differences between the following three:
Hubble Space Telescope Chandra X-Ray Observatory
Spitzer Space Telescope