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Observing
the entire electromagnetic spectrum
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Recall that visible light
is only a tiny portion of the electromagnetic spectrum
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Special telescopes are needed
to observe at other wavelengths
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Radio--metal
dishes
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Infrared and UV--optical
telescopes with special detectors above the atmosphere
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X-ray--grazing
incidence optics, CCDs, above the atmosphere
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Gamma-Rays--no optics, only
special detectors
Text
Figure 5-7: Electromagnetic Spectrum
VLA
image (Radio)
IRAS
(Infrared)
Cerro
Tololo (Optical)
IUE
(Ultraviolet)
Hubble
(Near IR, Optical, Ultraviolet)
Chandra
image (X-ray)
X-ray
Mirrors
GRO
(Gamma Ray Observatory)
NASA's
Great Observatories
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