|
LUNAR
TV CAMERA
This is the
camera that set the eyes of the world upon the first images of
humankinds walk on the moon during Apollo 11.
At the start
of the space program, TV didnt go along. Typical cameras
weighed about 400 pounds and were designed only for studio use.
But NASA began to become aware of the tremendous scientific and
popular need for moving pictures.
The challenge:
Send back live pictures of the first steps on the moon, and do
it with the only piece of mission equipment that would have to
work in all phases of the trip. In other words, the portable video
camera was important, but not essential. There was no need to
bring two.
Design
needs: The camera should weigh as little as possible, use
very little power, be self cooling; and survive in temperatures
ranging from 250 degrees Fahrenheit in the lunar day, and minus
300 degrees in the lunar night. In addition, it would need to
withstand launch shocks, and possibly meteor showers and particle
radiation. It had to be easy for encumbered astronauts to hold.
Oh yes, it
also had to take pictures even when the only light around
was earthshine.
The Solution:
It took five years, hundreds of people, and over a million dollars
to develop the seven-pound SEC vidicon camera. But it was ready
on July 20, 1969, a pioneering example of solid state and integrated
circuit technology. All Neil Armstrong had to do was point and
shoot. The signal was beamed to a receiving dish in Australia,
converted to standard commercial broadcast format, and shown to
more than 500 million people.
|