Radio Astronomy
Image courtesy of
NRAO/AUI
Image courtesy of
NRAO/AUI

Image courtesy of NASA

Image courtesy of Snapped by:
NRAO/AUI Vallian
M51
Whirlpool
Galaxy
Image courtesy of
NRAO/AUI

Optical Radio
Telescope Telescope
CCD Array Radio Receiver
Noise Noise
Correction Correction &
Assembly

Telescopes and Resolutions
Image courtesy of
Images courtesy of
NRAO/AUI
Paul Lowell
Image courtesy of Images courtesy of
NRAO/AUI Paul Lowell
Image courtesy of
NRAO/AUI
Images courtesy of
Paul Lowell
Image courtesy of
NRAO/AUI Image courtesy of
NRAO/AUI
Image courtesy of U.
Manchester
Cygnus A
Radio
Source
Images courtesy of Image courtesy of
Paul Lowell NRAO/AUI

Very Large Array Australia Telescope Compact
Array
Image courtesy
Image courtesy of of ATCA
NRAO/AUI
Interferometry Very Long Baseline
Interferometry
Signal from one
telescope.
Signals from a pair of
telescopes combined.

Noise
Suspected USAF Flyovers
Distant thunderstorm
Image courtesy of Paul
Sunset Lowell
Images courtesy of
Paul Lowell
Star Same star w/ nearby satellite
Image courtesy of
Christian Wolff
Image courtesy of
NRAO/AUI

Radio Sources
 Cold Molecular
Clouds
• Neutral Hydrogen
• Complex
molecules
 Strong Magnetic
Fields
• Decelerating
relativistic
electrons
• Quasars, Pulsars,
Supernova
Remnants, Active
Galaxies
Image courtesy of
NRAO/AUI

Snapped by:
BigDipper
Image courtesy of
NRAO/AUI
M17
Swan Nebula
Image courtesy of
NRAO/AUI

Image courtesy of
NRAO/AUI
Snapped by:
Astroman
Antenna
Galaxies
Image courtesy of
NRAO/AUI

M42
Orion Nebula
Snapped by:
KathyC
Image courtesy of
NRAO/AUI
Image courtesy of Image courtesy of
NRAO/AUI NRAO/AUI

Betelgeuse
Inset courtesy of Snapped by:
Snapped by: NRAO/AUI orion1958
orion1958
Jupiter and Saturn
Inset courtesy of Snapped by:
Image courtesy of NRAO/AUI JoshuaH
NRAO/AUI

M33
Snapped by: Image courtesy of Image courtesy of
ralphd050702 NRAO/AUI NRAO/AUI
M81
Image courtesy of Image courtesy of
Snapped by: selby
NRAO/AUI NRAO/AUI

M84
Snapped by: astroman
Image courtesy of
NRAO/AUI
M87
Snapped by: marleen
Inset courtesy of
NRAO/AUI

Karl Jansky
Image courtesy of
NRAO/AUI
Jansky = Jy =10-26 Watts / m2 / Hertz

For More Info
 Society of Amateur Radio Astronomers
www.radio-astronomy.org
 National Radio Astronomy Observatory
www.nrao.edu
 Pisgah Astronomical Research Institute
www.pari.edu

NGC 5128 (Centaurus A)
Image courtesy of
NRAO/AUI
Snapped by:
Plowell

Image courtesy of
NASA