Lens direction of eyepiece of astronomical telescope

Adjusting the lens direction of the eyepiece of an astronomical telescope requires the following steps:

1. Loosen the screw on the eyepiece barrel, which is used to fix the eyepiece barrel and separate it from the rest of the telescope.

2. Rotate the eyepiece barrel and adjust it to a proper angle. This angle should enable the eyepiece to clearly observe the object aimed at by the telescope.

3. Adjust the focal length of the eyepiece to change its definition and magnification. If the telescope is equipped with a rotating eyepiece, you need to turn the knob on the eyepiece to adjust the focal length. If the telescope is equipped with a push-pull eyepiece, you need to push and pull the eyepiece tube back and forth to adjust the focal length.

4. Repeat the above steps until the object pointed by the telescope can be clearly observed.

Please note that when using astronomical telescope, the eyepiece tube should be stable to avoid jitter or imbalance during use. At the same time, attention should be paid to avoid fingers or other objects touching the eyepiece surface to avoid scratching or blurring its surface.