With the abolition of Russian schools of astronomy, fewer and fewer graduates know at least something about the stars. But it is not knowledge that always decides everything, since people still love to look at the stars, which still attract with their incomprehensible romance. The only thin thread that can bring us a little closer to these luminaries is the telescope. In childhood, few dreamed of a real telescope through which each star and planet could be viewed. You have a chance to fulfill this dream, if not for yourself, then for your children: buy a telescope for them.
How to choose the right one?
It is not easy for an uninitiated in the subtleties of optics to understand the device of even simple binoculars, not to mention such a complex device as a telescope. But the bottom line is that when you select it, you don’t need to know so much. Any telescope has several basic characteristics: the diameter of the lens, the magnification and the diameter of the exit pupil.
In the instructions for any model you choose, you can find a subscript, for example, 10x30, where 10 will be a magnification, and 30 will be the diameter of the lens. The range and quality of the review primarily depend on the multiplicity, but it’s not worth chasing too much indicators, since the higher the multiplicity, the lower the image stability. As a result, if the magnification is too high, your telescope will simply smear the image.
In order to compensate for this error, a larger lens diameter is used. Accordingly, the higher it is, the more light enters it, and the clearer the visibility of distant objects. Try to choose ratios in which the diameter of the lens is at least three to four times higher than the multiplicity index. The following quality indicator depends on this .
The diameter of the exit pupil is not indicated anywhere, but its size can be determined by dividing 30 by 10 (the second number by the first). As a result, we get 3 mm, which will be an indicator of the exit pupil. Its optimal size should be no more than 4.25 and not less than 3.50 mm, otherwise your telescope will not produce a high-quality image of the observed objects.
The most popular with both professionals and amateurs are Yukon spotting scopes. This company supports
a balance between price and quality, offering the most reasonable price for certain options. Of course, there are many other companies, but why risk quality or overpay for a big name?
Do not be fooled! There are no telescopes for observing the sky at night: there is too little light for the image to be at least a little clear. Nevertheless, sellers of stores often try to play on the inexperience of their customers, listing obviously defunct functions. Always carefully study the technical specifications of the device and do not overpay for unnecessary trifles.
Now that you know exactly how to choose a good spyglass, it is time to act. And remember that the telescope is not just a tool, it is with the help of which you yourself will remember your childhood, fulfilling your cherished dream. In addition, you will give your children the opportunity, looking at the sky, to dream of the unattainable, great and beautiful too!