Place the lenses in the cardboard holders. We wanted to make an “E” for our captain, but you could make polka dots, stripes, or even a skull and crossbones! Cardboard Telescope: How to make your own cardboard telescope. Lay a strip of tape down onto the cutting mat and carefully cut your design with the craft knife. That’s it! make it a larger in diameter by using cardboard rings cut from the toilet paper roll . Gather all of your supplies so everything is nearby when you begin making your telescope. The long focal lens goes into the ring with a wider diameter. Slide the two tubes in … Duct tape. Check that both lenses are perfectly even with the cardboard. 2. Tape the second lens neatly to the end of the paper towel tube. Now your telescope is ready to be used! Insert the empty end of the paper tube into the cardboard tube. I'm … Step 4 Pull your design up off of the cutting mat and place it on your telescope. Look through the eyepiece and point the other end of your telescope at a distant object. Now it’s time to decorate! 3. Apply a small amount of white glue to the outside edge of each lens. you will need > cardboard > duct tape > 2 mirrors 1 big and 1 small > 2 lenses 1 big and 1 small Allow the glue to dry. Just like in the previous steps cut a 10 cm long piece of white and black sheets and roll it along the circumference of the bottle neck. just make the diameter enough for the chart to be able to slide in and out of the telescope … Tissue paper (optional) 2 cardboard tubes, diameter wider than the lens on the magnifying glass with a handle. When I set out to build a portable telescope, known as a Dobsonian telescope, the first step had me stymied—where do you find 6 ft of 8-in.-dia cardboard tubing?. Squeeze each lens into the center of each cardboard ring.
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