how to see the eclipse with pinhole projector with a card

I cut out the bottom so if fits snug over the barrel and taped it on. I found a black plastic bowl from a restaurant that fits scope. I melted the edge of the eyepiece holder first lens on my scope. Otherwise 100 power sun image will melt inside of scope. One meter image of eclipse: Use a Newtonian or Dobsonian telescope to project suns image: Refractor scope needs a mirror.ġ. Pretty small! Project a Partial Solar Eclipse with Binoculars or a Telescope The throw distance in feet, divided by 9, gives the image diameter in inches. Tape your card with the hole right onto the mirror.Įven at its best, pinhole projection gives only a small image. Hold the mirror in place with modeling clay. If the Sun is too high in the sky for this, you can direct its image horizontally into the room by setting up a small, high-quality mirror on the sill of an open window. (Of course, don't look through the hole directly at the Sun! Look only at the spot of light that falls on the paper.) Again, experiment with different size holes to get the best, sharpest view. Set up a white piece of paper across the room to catch the Sun's image. Arrange for sunlight to enter through a small hole punched in a card near the top of the window. Find a room with a Sun-facing window, turn out any lights, and pull the shades. This lets you use a small pinhole giving a sharp image.Ī much better way to do pinhole projection can be arranged at a window indoors. A large hole makes the image bright but fuzzy a small hole makes it dim but sharp.įor a better view, you can reduce the amount of daylight shining on the viewing card by enclosing it in a long box (left). This image will go through all the phases of the eclipse, just as the real Sun does. The hole will project a small image of the Sun's disk onto the lower card. Poke a small hole in an index card with a pencil point, face it toward the Sun, and hold a second card three or four feet behind it in its shadow. The simplest safe way to view a partial solar eclipse is to watch the Sun's image projected onto a piece of paper.

Fortunately, there are many easy ways to watch the show safely.

The result can be 'eclipse blindness,' a serious eye injury that can leave temporary or permanent blurred vision or blind spots at the center of your view. The danger that a partial solar eclipse poses is simply that it may prompt people to gaze at the Sun, something they wouldn't normally do. Looking at the Sun is harmful to your eyes at any time, partial eclipse or no. This view of the partially eclipsed Sun was made through a metal-coated glass filter, which produces a yellow or orange image of the Sun most aluminized Mylar filters give a blue image.

How to see the eclipse with pinhole projector with a card