What is parallax adjustment and what is parallax angle

After looking at the computer for a long time, look at the distance!!

The angle at which the star moves within 6 months is larger, and the smaller the parallax angle, the farther away the star is.

I hope I'm helpful to you.

Parallax is the difference in direction caused by observing the same object from two points at a certain distance. The reason for this is that the actual image of the target does not happen to be on the plane of the crosshair. The presence of parallax increases the error of the ruler reading, and the way to eliminate it is to rotate the objective lens to the light spiral and repeat the light until the shadow finger image of the scale no longer moves when the eye moves slightly up and down.

Because there is a distance between the left and right eyes of a person, there is a slight difference in the perspective of the two eyes, and this difference will make the scenery observed by the two eyes a little displaced. The reason why human beings are able to produce stereoscopic visual effects with a sense of space is precisely this kind of displacement, which is called parallax in medicine, is organically synthesized in the brain of Weiqing cavity.

Extended information: The eye-opening is actually the result of parallax. The results of observing things with different eyes of the same person are not the same, and the eyes of different people are naturally very different.

Binocular parallax is when a person observes a near object, the two eyes will produce parallax, that is, a pair of slightly different images on the two retina, the brain will fuse them to produce a three-dimensional image, and can determine the distance between the object and the viewer.

The way to eliminate parallax is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this point, the image of the crosswire and the target from the eyepiece is very clear.

After the objective lens is focused, when the eye moves up and down slightly at the end of the eyepiece, sometimes there is a phenomenon that the hidden cross wire of the judgment pin has a relative motion with the target, which is called parallax of the digging hall. Parallax occurs because the image of the target through the objective does not coincide with the crosswire plane. Since parallax can affect the accuracy of observations, it must be eliminated.

The way to eliminate parallax is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this point, the image of the crosswire and the target from the eyepiece is very clear.

Parallax is the difference in direction caused by observing the same target from two points at a certain distance. The reason for this is that the actual image of the target does not happen to be on the plane of the crosshair. The presence of parallax increases the error of the scale reading, and the way to eliminate it is to rotate the objective to the light spiral and repeat the light until the image of the scale no longer moves when the eye moves slightly up and down.

Because there is a distance between the left and right eyes of a person, there is a slight difference in the perspective of the two eyes, and this difference will make the scenery observed by the two eyes have a slight displacement. The reason why human beings are able to produce stereoscopic visual effects with a sense of space is precisely the organic synthesis of this displacement, which is called parallax in medicine, in the brain.