 This activity helps to explain the difference between magnification and resolution. You can use the cards or the PowerPoint Moon Magnify. The white circle shows how you would see the moon magnified by about 70 times looking through a 3-inch diameter telescope with a quality lens. Your audience will probably think they will see a lot more detail if we magnify this. We'll take a new eyepiece that gives us higher magnification and put it in the telescope. The dotted black line represents how much we'll see in the scope with higher magnification. Let's see how that looks like. The circle represents our view through the telescope. This represents a magnification of about 300 times. The resolution of the telescope does not get any better. For better resolution, you need a larger diameter telescope. Let's look at this same area of the moon through a telescope with a larger diameter. This is the same view with the telescope that has a 7-inch diameter. How much more detail can you see with this one? The power of the telescope is not how much the image is magnified. It is mainly the size of the primary lens or mirror, how big around the telescope is. This might assist your visitors who ask what scope they should buy to pay more attention to the diameter or aperture of the telescope and the quality of the mirror or lens, not the claimed magnification.