“She started to show interest in observing from about age 6, and we got her a small telescope for Christmas when she was nine.” Grinding and polishing mirrors for a homemade telescope can ...

Remember, you will need a longer telescope for this to work. This double convex lens is a good focal length (7.87 inches) for the objective lens of a homemade telescope. It is a high-quality lens ...

As amazing as the James Webb Space Telescope is, its primary mirror is only 6.5 meters in diameter. Even then, the mirror had to have foldable components to fit into the launch rocket. In contrast ...