By Robert L. Clark

ISBN-10: 1441964142

ISBN-13: 9781441964144

The web Age is altering every thing approximately human invention and using know-how. The switch has been in comparison to that of the creation of printing. Making your individual telescope isn’t what it was once, both, thank you in part to the web. The outdated days of grinding and sharpening are long past – except you must do it! now you can gather an outstanding software from quite a lot of cheap Internet-available parts, new or used. the web is the hot components “junkyard,” with stuff from around the world so that you can choose via, day or evening. during this e-book you'll find out what’s usually to be had and the way to entry it. you are going to easy methods to review optical elements and mix them from different net resources. you'll get many principles on the way to make the elements that you simply don’t purchase or scrounge and the way to revive previous lenses and mirrors. and you may research a few straightforward physics of designing ergonomic – cozy – telescopes. Navigating your method round the percentages is straightforward utilizing this necessary and well timed source. With Robert Clark’s assist you can get the simplest that the web has to supply. start now!

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Additional resources for Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More

Example text

In Fig. 1 the second of the two is hidden on the other side of the telescope. The additional screw shown, a little farther down the tube, secures the adapter to the main, 3-inch, tube. The clear diameter of the front surface of the lens is just a little less than 79 mm. 1 inches. Are we compromising some of the area of the lens by attaching it to the end of a 3-inch tube? 1 inch difference. The lens produces a converging cone of light in the tube. By the time that cone reaches the front of the 3-inch tube its diameter has been measurably reduced.

The lenses in the mailing tube design are secured in the cardboard tubes between rings made from the same tube. To make a ring in a tube cut it out from the end of a scrap tube. Cut a piece out of the ring so it can be compressed to fit inside the tube. You need to remove about 4 times the thickness of the material from the ring. Apply A Real Simple Telescope 29 Fig. 6 “Dollar store” telescope from mailing tubes and a file-folder tube plenty of glue and slip it into the main tube where you want it.

Just don’t get a lot of tape on the surfaces of the lenses and get the lenses fairly square to the tubes. 6 shows a dollar telescope using some mailing tubes and a glued-up tube made from a couple of old file folders, in case you can’t find ready-made tubes that will work. Don’t worry about lumps in a glued-up tube. The whole thing will be flexible enough that you will be able to push it into shape. If you choose to add more layers you will end up with a pretty decent tube. This is probably how the tubes for Galileo’s telescopes were made.

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Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More by Robert L. Clark

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