your radio telescope to 408MHz
(408 million cycles per second) and check out the Radio Sky!
In the 1970s large dish antennas at
three radio observatories,
were used to do just that -
the data were combined to map the entire sky.
Near this frequency,
cosmic radio waves are generated by high energy electrons spiraling
along magnetic fields.
In the resulting false color image, the galactic plane
runs horizontally through the center, but no
stars are visible.
Instead, many of the bright sources near the plane
are distant pulsars, star forming regions,
and supernova remnants, while the grand
are pieces of
bubbles blown by local stellar activity.
External galaxies like
located above the plane to the right of center, and
the LMC (below and right)
also shine in the Radio Sky.