How do astronomical telescopes see the sun?

Never burn your glasses directly, but it will lead to permanent blindness in the long run. Observe the sunset with inferior filters. Telescope focuses light. The temperature of the filter is extremely high. Strong light shines directly on the eyes through cracks for milliseconds, making them blind for more than ten days, shedding more tears and seriously damaging their vision!

even at dusk or early in the morning! The diameter of the smallest telescope must be 6mm, and the diameter of the pupil of the human eye is the largest, that is, 6 mm. In this way, even a 6mm telescope has 1 times the condensing power of the human eye!

Extended information:

Methods of observing the sun with astronomical telescope:

1. Buy a shading film and install it above the objective lens. At this time, you can directly observe the sun with the naked eye through the mirror, and you will see that everything except the sun is black and the sun is discolored (the specific color is determined by the shading film).

disadvantage: only one person can watch it at a time.

advantages: shooting equipment can be added.

2. Install a solar projection plate behind the eyepiece for projection observation. Simply speaking, the solar projection panel consists of two parts: a metal support rod and a projection panel. The metal support rod is fixed on the outer wall of the lens barrel, parallel to the optical axis, perpendicular to the projection panel, and connected to one side of the projection panel, thus forming a projection surface perpendicular to the main optical axis behind the eyepiece, and sticking a white paper on it.

When the mirror is aligned with the sun, an image of the sun will appear on the projection panel. If the white paper is replaced with tracing paper, the image of the sun can be depicted. If you don't need to draw a picture, just look at an image, you can just hold a blank paper instead of installing a solar projection board.

advantages: it can be watched by many people, and it is very suitable for astronomical science popularization activities, and it can trace pictures.

Disadvantages: There is no shading film to control the incoming light intensity, and the temperature of the mirror rises rapidly. Every once in a while, the incoming light must be stopped (deflecting the lens or covering the objective lens) to prevent the mirror from burning.