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star gazing book


Making A Telescope

Go to the Table of Contents for this booklet

This is a little project that gives you the basic idea for making a small telescope of your own. You will need for the project:

2 Cardboard tubes with one a little bit wider than the other and 2 convext lenses and some cardboard to mount the lenses and some glue.

The diameter of the objective lens should be approximately two inches and its focal length should be approximately 18 inches. The eyepiece lens should be small that two inches in diameter and have a focal length of approximately two inches.

You can test the focal length of a lens by focusing an image of the sun onto a white piece of paper. When the inage of the sun is sharp the distance the lens is away from the paper is the focal length.


The telescope

Step 1: Cut from cardboard four circular rings. Make 1 of the mthe inside diameter of the small tube. and make three of them the inside diameter of the large tube.

cardboard rings

Step 2: Cut a hole in the center of ring A and glue the eyepiece lens into it.

Step 3: Cut a hole in the center of ring B and glue the large objective lens into it.

Step 4: Cut holes in rings C and D so they will snugly slide over the thin tube and glue them in place as shown below.

The telescope assembly

Step 5: Glue the ring/lens assemblies onto the corresponding tubes.

Step 6: After the glue has dried the eyepiece tube will snugly slide into the objective tube.

Using the Telescope

Slide the tube in and out in order to focus on the object ou want to view. Note that this simple telescope will show objects to be upside down.

NextContinue on to Using a Camera to take night sky photos

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Make a telescope kit

Refractor Telescope Kit

Build-It Yourself! -- It?s so easy, now even an eight-year-old can build an 18" long, 3X refractor telescope in less than an hour. -- Includes objective lens, eye lens, glare stops, kraftboard tubes, instructions and an Edmund Star and Planet Locator. Finished product is powerful enough to show moon craters, Jupiter?s moons and many stars not visible to the naked eye. -- For ages 8 and up. --



Astronomy for Kids

Janice VanCleave's Astronomy for Every Kid: 101 Easy Experiments that Really Work (Science for Every Kid Series)

Why do planets spin? How hot is the Sun? What keeps the Moon in orbit around the Earth? What are Saturn's rings made of? What's a black hole in space? Now you can discover the answers to these and other fascinating questions about basic astronomy. In Astronomy for Every Kid you'll learn about the constellations using a shoe box planetarium. You'll chart the movement of the stars with nothing but a string, a marker, and a nail. And you'll use a toy magnet to simulate the Earth's protective force field. Each of the 101 experiments is broken down into its purpose, a list of materials, step-by-step instructions, expected results, and an easy to understand explanation. Every activity has been pretested and can be performed safely and inexpensively in the classroom or at home. Also available in this series from Janice VanCleave: Biology for Every Kid Chemistry for Every Kid Dinosaurs for Every Kid Earth Science for Every Kid Geography for Every Kid Geometry for Every Kid The Human Body for Every Kid Math for Every Kid Physics for Every Kid


The Night Sky

A Child's Introduction to the Night Sky: The Story of the Stars, Planets, and Constellations--and How You Can Find Them in the Sky

Children eight and up will enjoy this conversational but information-packed introduction to astronomy and stargazing, which includes the achievements of the great scientists, the history of space exploration, the story of our solar system, the myths behind the constellations, and how to navigate the night sky. Whimsical color illustrations on every page and handy definitions and sidebars help engage younger readers and develop their interest. The special star wheel helps locate stars and planets from any location at any time of year. This is the third in Black Dog & Leventhal's successful series including The Story of the Orchestra and A Child's Introduction to Poetry.

Looking for some Great Astronomy stuff like telescopes, lenses and science projects? Edmund Scientifics has it all.