Dew shield

Imagine you're sitting outside on a chilly evening with a warm blanket to keep you cozy. Just like how you're using the blanket to keep yourself warm, telescopes use something called a "dew shield" to keep themselves dry.

You know how sometimes in the morning the grass is wet with dew? Well, telescopes can get dew on them too! When this happens, it can make it hard to see through the telescope because the dew can make the lens blurry. That's where the dew shield comes in!

A dew shield is like a long hat that goes on top of the front part of the telescope. It helps to keep the dew from building up on the lens by blocking the damp air from getting close to it. Just like how a hat can protect your face from the sun or rain, the dew shield protects the lens from getting wet.

So, why does it matter if the lens gets wet? Well, because wet lenses don't work as well as dry ones! Just like how you can't see very well if your glasses are foggy, telescopes can't show you clear pictures if the lens is covered in moisture. That's why dew shields are really important for astronomers who want to study the stars without any obstructions!