Why all NASA space shuttles (et cetera) images in low quality grainy black and white? I was youtubing NASA images and it seems that all the images they were part of the video quality 1950-60. Why?
It is true, everything is wrong with NASA.
Its okay, they know that you are on them. Do as you're not at home when men in black suits knocking on your door and not answer the phone.
That's because you're looking on YouTube where almost everything is grainy and low quality.
To make an image appear twice as big takes four times the bandwidth. Three times larger = nine times.
Add color and you can multiply by 8 (depending on how the color coded).
Then they post them to mpeg which is a "lossy" format: the original information is lost because each image is packed into the computer memory as little as possible for uploading to the server YouTube, and later downloaded to your computer.
When your computer, it plays again, he tries to recreate the image of all partial information (parts of the information is "guessed" by your computer).
This is an excellent question. We might think of today's technology, especially what the gov't has, we would like to see the video quality. All shows that are so **** happens we are not aware of
YouTube is of poor quality to begin with.
NASA is not in the business of television. they are in the area of space exploration, and spend the money on scince, where it belongs.
Raymond is right, although the video codecs are fully deterministic, and do not guess. They throw much of the information, though. YouTube video codec throws more than others.
Not all sequences. Only a special video you can see such poor quality, and the number of copies and clones and modifications thereof.
The black and white cameras are very sensitive to hold the light and can therefore also used during orbital night, but when night falls, like any other camera, there is more noise on the camera . The special video you mention, is one of those videos orbital night.
Most images of the space shuttle, especially after the new cameras were introduced, is very good.
For example the following:
http://www.youtube.com/watch?v=_jY-ALUq5 ...
The quality is not worse than for other television images compressed with high compression video to be uploaded on a website.
PS: If you want better quality, buy a DVD - a lot of good around the DVD from the 50th anniversary of NASA birthsday, with much better quality than the web video.
The answer is simple: it is not. Look at other sources than the net, where they compress the video to make it play fast on a PC at home. There is a certain color of the entire video and film glorious mission almost all from Mercury.
The image quality varies depending on what his source was and how it was recorded. For example, we have wonderful things that has been registered with IMAX (70mm high resolution!)
On the other hand, the video of shuttle launches originated from the soil and the cameras followed pad, and some who did not have to be of high quality or broadcast quality.
Posted on February 26, 2010.