Jolsaawie Mini Portable Zoom Telescope Binoculars Powerful 200x25 Folding Telescope Range Low Light

3. Focusing. Slowly turn the focus wheel to focus and adjust the sharpness! 2. Adjust the interpupillary distance. Adjust the distance between the two lens barrels to match the pupil distance of your eyes, so that the images can be seen to overlap. 1. Keep a proper exit pupil distance with the eyepiece. If the stickers are too close or too far away, you feel dark shadows in of view when observing, and you not be to get a complete circle of vision. 4. Do not use the telescope to observe the sun directly, as this cause serious damage to the eyes or even blindness.