Monday, February 6, 2012

Why dont I see stars when I watch 'live' space video?

I've seen footage on CNN and FOX News covering space shuttle missions and when they show the 'Live' footage of the spacemen doing there mission outside the space shuttle but there are no stars visible. Why is this?Why dont I see stars when I watch 'live' space video?
Because the suits and the space station are all white. They reflect sunlight and that causes the camera to use a narrow aperture setting. That blocks out the faint light from the stars.



A shot directly into space without any objects in the foreground do show stars.
About a million times difference in brightness.

To see details on video like stars and other stuff, astronomers use a large telescope to gather as much light as possible and a special camera with frame storage for up to 256 video frames, or about 4 seconds, all piled on top of each other.

And this is without any brilliant earth, moon, spaceship, or spacesuit anywhere near the camera and telescope.Why dont I see stars when I watch 'live' space video?
If you were to take a camera and set its exposure for the bright sun light on the astronauts and shuttle and then aim it at the stars with nothing else in the frame, you would not see any stars either because not enough light from the stars would get through the small opening to affect the film or sensor. Same thing with the argument that the moon landing was a fake because the sky is black so we should see stars in the pictures.Why dont I see stars when I watch 'live' space video?
The star are very very VERY faint. There are EASILY wiped out by any background light.



In fact, any movies you see whihc show start (2001, Battlestar galactica, etc) are NOT realistic, becasue the lights from the spaceships would make teh star far too dim to see on film.
The stars are too dim compared to the shuttle or space station or astronauts.

You know how it's hard to see when you come out of a movie on a sunny day. Similar thing.
They're underexposed.
The stars are too dim. The space stuff in the video is MUCH brighter than a star's image.
they could be fakes the stars should be brighter then on earth

No comments:

Post a Comment