Kirk Gillock
Rebel with a cause
It does suck that the original tapes are lost. But mistakes are made every day, especially in a huge organization like NASA. Didn't a Mars lander crash because some scientist forgot a decimal or messed up the metric conversion? At least NASA tried to clean-up the footage that they do have. That's pretty cool of them.
I read about the search for the tapes about two years ago. Here's a link to the story of the two men hunting for the footage. Interesting read.
http://www.washingtonpost.com/wp-dyn/content/article/2007/01/30/AR2007013002065.html
For those interested in the technical side of the video broadcast, here's some info.
I read about the search for the tapes about two years ago. Here's a link to the story of the two men hunting for the footage. Interesting read.
http://www.washingtonpost.com/wp-dyn/content/article/2007/01/30/AR2007013002065.html
For those interested in the technical side of the video broadcast, here's some info.
It's pretty impressive that people were able to see a live broadcast from the Moon. Even if it was low-res. Now-a-days local news reports can barely do a live broadcast from a few blocks away without technical difficulties. lolTelevision pictures of the Apollo 11 landing were sent directly to Earth from the surface of the Moon using the Lunar Module's antenna and power supply. This placed a restriction on the amount of bandwidth that could be transmitted. Apollo 11 was thereby limited to using a black-and-white, slow-scan TV camera with a scan rate of 10 frames-per-second at 320 lines-per-frame. In order to broadcast the images to the world, the pictures had to first be converted to the commercial TV standards. In the US, this was the EIA standard of 30 frames-per-second at 525 lines-per-frame. The pictures transmitted from the Moon were displayed on a 10-inch black-and-white monitor and a vidicon camera was pointed at the screen and the pictures were scanned at the EIA standard. A number of peculiar image artifacts were seen on the images. One set of artifacts was produced by sunlight reflecting off the astronauts and the LM onto the TV camera's lens. These reflections produced the ghostly effects perceived by the public. Other prominent artifacts were the result of spots burnt into the monitor screens from which the optical conversions were produced.
Apollo 11 was only a first step in what was to be increasingly ambitious missions, thus it was lacking in some capabilities. Among these was the ability to transmit high-quality TV pictures. Later missions, starting with Apollo 12, had enough time in the schedule to permit the astronauts to erect large freestanding dish antennae. This increased the amount of bandwidth that could be transmitted, thus allowing complex color TV pictures to be sent directly to Earth
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