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Telescope Notes 1-2

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by

Emily Cline

on 3 September 2013

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Transcript of Telescope Notes 1-2

Chapter 1-2
Telescope Notes
collects
light
and other kinds of radiation from the sky and makes it
brighter
(more visible)
Telescope
used to study
visible light
from objects in the universe
Optical
Telescope
2 factors affect
clear images
:
1) Earth's atmosphere affects light gathered by telescopes on Earth. (Motion of air causes starlight to shimmer and blur)
2) Atmosphere acts as a
shield
around Earth, blocking most kinds of
invisible
radiation that come from objects in space.
Large Telescopes and Clear Images
Two types
1)
Refracting
Telescopes - use
lenses
to gather and focus light


2)
Reflecting
Telescopes - use curved
mirrors
to gather and focus light
Ex: Keck Telescope in Hawaii uses 36 mirrors to collect and focus light
To resolve this problem, scientists can do the following:
1) Telescopes are put on
mountain tops
because air is thinner
2) Telescopes are put in
space
(above the atmosphere)
Non-Optical
Telescopes
used to study
invisible light
from objects in the universe
Ex:
Gamma
Rays, Radio Waves, Infared,
X-Rays
The End!!
Full transcript