You are given a choice between a very large, powerful telescope 100 m in diameter, and a small one 1 m in diameter. Which one would you choose for near earth asteroid detection, and why? THANKS!
2006-11-13 13:58:03 · 6 answers · asked by hunnk33 1 in Science & Mathematics ➔ Astronomy & Space
Hi. The small one due to it's wider field of view.
2006-11-13 14:24:45 · answer #1 · answered by Cirric 7 · 2⤊ 0⤋
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2016-11-29 03:02:22 · answer #2 · answered by marconi 4 · 0⤊ 0⤋
If we assume the smaller had a shorter focal length, then I'd choose the smaller one, as the other person said, due to it's wide field of view.
The 100m one would certainl offer a brighter image but if we assume both of the telescopes have an f ratio of f/2 then the 100m one has a focal length of 200m and the 1m one has a focal length of 2m
If we used a wide field eyepiece with a focal length of 41mm in the 2m one we'd be magnifying about 48.7 times
In the 100m one that same eyepiece would yield a magnification of 4878 times! A much much much smaller field of view. You'd only be able to look at an itty bitty portion of the sky!
2006-11-16 11:47:35 · answer #3 · answered by minuteblue 6 · 0⤊ 0⤋
100m telescope would gather much more light. That would be extremely important for detecting faint asteroids that might not reflect much light. Of course a 100m telescope would be gigantic! It would have to be mobile and able to view wide angles to be good for astroid detection.
2006-11-13 14:44:48 · answer #4 · answered by Roman Soldier 5 · 0⤊ 0⤋
the large 100m one. It doesn't matter how large it is, you can still calibrate it to see as close as the moon.
Most Near-Earth objects don't get closer than the moon. If they did, it is very likely that the earth would pull it in.
However, there have been reports of asteroids that have been this close and escaped.
2006-11-13 14:08:02 · answer #5 · answered by diburning 3 · 0⤊ 0⤋
small one, 1m dia.
2006-11-13 14:13:36 · answer #6 · answered by M.R.Palaniappa 2 · 1⤊ 0⤋