Download File

Unit 3, Section 1
Telescopes
Telescopes
 Vocab Words for this section are:
–
–
–
–
Reflecting Telescope
Refracting Telescope
Radio Telescope
Space Telescope
Telescopes
 Hans Lippershey was the inventor of the
telescope in 1608.
 Galileo was the first to use a telescope
to study the sky in 1609.
 The invention and use of the telescope
began a huge number of discoveries in
the field of astronomy.
Telescopes
 3 types of telescopes
– Optical Telescopes study visible light.
 Reflecting telescopes use mirrors to bounce light from an
objective lens to an eyepiece lens
 Refracting telescopes use lens to bend light and magnify
images coming through an objective lens.
– Radio Telescopes study radio waves from earth.
– Space Telescopes travel out of Earth’s atmosphere
to study the other types of radiation not visible to
the naked eye, and the radiation that cannot make
it through earth’s protective atmosphere.
Telescopes
 Optical Telescopes study the visible
light section of the electromagnetic
spectrum.
 They uses mirrors and/or lenses to
magnify the light.
Telescopes
 One type of
Optical
Telescope is
the
Reflecting
Telescope
– Within this
telescope
there are
mirrors to
bounce the
light
traveling
through.
Reflecting Telescope
Another Reflecting Telescope
Telescopes
 Another type
of Optical
telescopes is
the Refracting
Telescope
– Within this
telescope there
are lenses to
bend the light
traveling
through.
Refracting Telescope
Convex Lens
Telescopes
 Radio Telescopes
use a parabolic
antenna and a
receiver to study
radio waves.
– Radio Waves
are a type of
radiation that is
not normally
visible to the
naked eye.
Radio Telescope
World’s Largest Radio
Telescope
Telescopes
 Space telescopes
travel out of
earth’s
atmosphere to
study all
different types
of radiation that
can not make it
through earth’s
atmosphere.
– Examples are
the Hubble
Space Telescope
and the Chandra
Space
Telescopes
Hubble Space Telescope