By Robert L. Clark
The web Age is altering every thing approximately human invention and using expertise. The swap has been in comparison to that of the advent of printing. Making your personal telescope isn’t what it was once, both, thank you partially to the net. The previous days of grinding and sprucing are long gone – except you must do it! now you can gather a good software from quite a lot of reasonable Internet-available elements, new or used. the net is the hot components “junkyard,” with stuff from world wide so that you can choose via, day or evening. during this e-book you will discover out what’s in most cases to be had and the way to entry it. you are going to the best way to review optical elements and mix them from different web assets. you'll get many rules on the right way to make the elements that you just don’t purchase or scrounge and the way to revive previous lenses and mirrors. and you'll examine a few straight forward physics of designing ergonomic – cozy – telescopes. Navigating your means round the percentages is simple utilizing this necessary and well timed source. With Robert Clark’s assist you can get the easiest that the web has to provide. start now!
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Extra info for Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More
Ideally the image of a star should approximate a true point. Failure to provide tight focus is obvious with a star image and, when it is the result of chromatic aberration, it is obvious with any bright, white object. Although it may not be so obvious with an extended object such as the Moon, it is equally damaging. The same effect of a point being “soft” means that the multitude of points that make up an extended image are fuzzy. It may not be very apparent, but the effect is to significantly reduce the resolution offered by the image.
1 in Chap. 2 illustrates the small copyscope. The Medium Copyscope 35 The Medium Copyscope Optical Parts Objective Lens Diameter = 4 1/2 inches Effective Focal Length = 18 inches Back Focal Length about 17 inches Marked: Charles Beveler Company, East Orange NJ Series III This lens was probably used in a large (auditorium size) projector. Its source was a dumpster in Fig. 1. Eyepiece From a 35 mm camera or any standard 1 1/4 inch eyepiece. Focuser This was an eBay purchase. Cost $15 plus $9 shipping.
Chapter 5 The 80 mm Refractor A 3+ inch refractor can serve as a travel ‘scope, a first ‘scope project, or a practical ‘scope to use at star parties. It is large enough to provide nice views but small and light enough to be easily transported and quickly set up. It can be built either as a simple, straight through ‘scope or with a star diagonal or both. Details for an easy tripod are included in this chapter. Both the telescope and the tripod can be put in an easy to make case to sit on the back seat of a car, inside a trunk, or even as checked luggage.
Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More by Robert L. Clark