How does an observatory manage to create a clear image of stars?

I would be thankful for any answers for a problem I haven't been able to solve:





When you look at an object through binaculars (eg. a cyclist passing by) and then try to follow the target still watching, the image gets dizzy - basically, you cannot see anything at all.





But how can it be technically explained that you can watch an extremely distant object in the sky (eg. Saturn, or a comet) through the observatory equipment when both the observatory, our Planet and the object are moving, each at a different, very high speed? How is it still possible to maintain such clear image of the object?How does an observatory manage to create a clear image of stars?
the better question is how do they name every star without naming one twiceHow does an observatory manage to create a clear image of stars?
Computers.





While observing star ABC123, the observatory's computer ';locks'; the telescope onto the particular patch of sky, and it follows it as the earth rotates beneath it.





Prior to the use of computerised telescopes, telescopes were locked inplace using mechanical systems that needed regular human intervention to keep a steady image.
The speeds at which most celestial objects are moving is so small compared to their distances as to be unnoticeable except with sophisticated instruments. However, the Moon is a different matter, and does move fast enough to blur time exposures. Fortunately, it is bright enough not to require a time exposure. Jupiter also presents a problem, in that its rotational speed is fast enough to blur time exposures lasting more than a couple minutes, but again, it is bright enough that there are not necessary.


Consider, though, a star might typically have a tranverse spatial velocity with respect to our view of 20 miles per second. Even Alpha Centauri is too far for that to make a difference. The fastest moving star from our point of view is Barnard's star, and it's shift amounts to 10.50 seconds of arc per YEAR! Nothing is going to blur at that rate.


The one real problem, then, is the Earth's rotation. Most modern telescopes, even amateur ones, are built with a motor that turns them at exactly the right speed to counteract the effect of the Earth's rotation. Even in the late 19th Century some professional telescopes had such devices.
hope this helps http://www.answers.com/topic/observatory .
1.) The observatory telescopes have much higher quality (and much larger) lenses.





2.) When making photographic exposures, the telescopes are computer-controlled to track the object as it moves across the night sky.





3.) Most observatories are at high altitudes, where the atmosphere is thinner and will cause less distortion.