1. The distance seen by the telescope is related to human vision
For example, the letters on the eye chart: when placed at a distance of 5 meters, people with good eyesight can see the bottom row, and people with nearsightedness may only see the first few rows. If you put the eye chart at 50 meters away, using a 10 times telescope is equivalent to zooming in by 10 times (the same as 5 meters away).
2. The distance seen by the telescope is related to the size of the object
There is an ant at a distance of 1000 meters. If you use a telescope that is 10 times larger, it is equivalent to pulling the ant closer to a distance of 100 meters. You still can’t see it. Can you say that this telescope cannot see 1000 meters? If it is a person at 1000 meters, you use a 10 times telescope, which is equivalent to pulling the person closer to 100 meters, you must see clearly.
For example, with the same telescope, the same person observes the billboard at 1000 meters. After the rain, in sunny weather with the sun, you can clearly see the small print on the billboard. In the case of cloudy days without sun and car exhaust and dust in the air, you may not be able to see clearly. Furthermore, if there is fog, that is, there are a lot of suspended particles in the air, and the visibility is reduced, you may not even be able to see it at 5 meters. This is why the highway is blocked in foggy weather.
3. The distance seen by the telescope is related to the quality of the telescope itself
For example, if there is a person at a distance of 1,000 meters, you can see it with a few thousand yuan worth of such as the PhD Trophy 234210, a 10x telescope and an ordinary 10x telescope worth tens of yuan, and the degree of clarity you can see is very different.
Two telescopes have the same parameters (multiplier, aperture, field of view, exit pupil distance, exit pupil diameter), and the price of telescopes with exactly the same size and appearance may differ several times or more. This is not surprising.
4. The price of the telescope is not related to the multiple
There are almost no military telescopes that exceed 10 times. The lens, prism, coating, and structure of the telescope determine the quality of the telescope. The light transmittance of a good telescope can reach more than 90%, and a poor telescope is only 50%-60%. The poor telescope sees the sky obviously darker.
Seeing this, you should understand why the telescope does not see the distance data? As long as there is an infinite object, the telescope can see infinite distance. Planets hundreds of light-years away can be seen without a telescope, and we can also see it with a telescope. The moon is far away from us (380,000 kilometers), and we can see it with a telescope. But no matter how good a telescope you use, how close you are to molecules, atoms, etc., you can’t see them. Why? Because they are too small!
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