Pinhole projectors and other projection techniques are a safe, indirect viewing technique for observing an image of the Sun.
Below are two methods to view the solar eclipse using DIY projection techniques.
Remember never to look directly at the Sun, especially when using binoculars or a telescope, as doing so can cause permanent eye damage.
This method is perfect if you’re planning to view the eclipse by yourself. The items you will need for this are:
This second method is ideal if you’re planning to observe the eclipse with several people. You can use a telescope or binoculars to project the image of the Sun onto a flat surface for viewing.
The items you will need for this method are:
Never look into the telescope or binoculars! Doing so will yield immediate irreversible blindness.
Never look through binoculars or a telescope wearing eclipse glasses. The focused Sun will burn through your glasses and instantly blind you.
Only specialty solar binoculars or telescopes that are solar-only instruments with built-in filters designed to be looked through without any protection are safe to use for direct viewing.