How far can an ordinary astronomical telescope see? . . . . . . . .

Large astronomical telescopes can see celestial bodies on the edge of the universe, including various nebulae, galaxies and star clusters, and the farthest distance can reach 65.438+0.5 billion light years.

How far to see and how far to see are two different concepts. As long as visible light enters your eyes, it can be counted as being seen by you, so its theoretical value is infinite. Whether these lights can present a clear image after being received by your eyes depends on the amount you receive. The larger the area, the more light collected and the clearer the image. The pupil of the human eye is equivalent to the light collecting ability of a circular surface with a diameter of 4 mm, and the role of astronomical telescope is to increase the receiving area of your eye. So how far you can see is mainly determined by the aperture of the objective lens of the astronomical telescope.

Generally speaking, under 1000 yuan, you can buy an expanded material with 80mm refraction or 1 14mm reflection, 1000 to 2000 150mm reflection and 2000 to 3000 102 refraction.

The brands used by astronomy enthusiasts are generally Guanbo, Xingtelang, Jinghua and Daguan. It is not cheap to buy binoculars. If you see a 150 reflective telescope below 1000 yuan on the internet, you should think carefully.

In terms of imaging, the refraction telescope image is clear, but there is color difference; Reflective telescope has no chromatic aberration, only spherical aberration, and its field of view is smaller than that of refractive telescope.

References:

Tadpole staff-How far can an astronomical telescope see?