Here's how it works:
1. Light from a distant object enters the telescope and strikes the primary mirror. This mirror is curved inwards, causing the light rays to converge.
2. The primary mirror reflects the light towards a secondary mirror. The secondary mirror is smaller and positioned near the opening of the telescope.
3. The secondary mirror reflects the light towards the eyepiece. The eyepiece is a small lens that magnifies the image and directs it to the observer's eye.
Essentially, the concave mirror acts like a giant magnifying glass, focusing the light from distant objects onto a small point. The secondary mirror and eyepiece then help to create a magnified and detailed image.