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Перевод: refractor

[существительное]
рефрактор

Тезаурус:

1. With the refractor, the light from the object to be observed is collected by an object-glass; the light is brought to focus, and the image is then enlarged by a second lens termed the eyepiece.
2. On the other hand a refractor is more costly, and in some ways less convenient to use.
3. If the object-glass of a refractor or the mirror of a reflector is of poor quality, the images will also be poor - and a bad telescope does not always betray itself at a glance.
4. Following the inroads made by professional astronomers, he abandoned meteor observations, and as a new challenge he began in 1953 to sweep the sky for comets, at first using a 10-cm (4-inch) refractor.
5. The cost of a 152-mm reflector is much the same as that of a 76-mm refractor.
6. Secondly, anyone who believes that a 60-mm refractor will bear a power of 300 is going to be bitterly disappointed.
7. I have heard reports that it can be glimpsed in binoculars, but even with my 20 I have been unable to find it - though it is clear enough in a 15-cm reflecting telescope, and I can just make it out with my 7.6-cm refractor.
8. I have often looked for it with binoculars, but I have never been able to glimpse it even with 20, though my 76-mm refractor brings it out unmistakably, and with my 39-cm reflector I have no trouble in seeing the central star.
9. If I used that particular eyepiece on my 76-mm refractor, I would still obtain a magnification of around 600 - but the image would be so faint that it would be completely useless.
10. Light path in a refractor.
11. In general, it is fair to say that one can use a magnification of 50 for each inch of aperture (forgive my temporarily reverting to Imperial measure!), so that a 3-inch refractor will bear a magnification of 150, a 6-inch will bear 300, and so on.
12. There are pros and cons, and everything really depends upon the main interests of the observer; for example, anyone who wants to make regular studies of the Sun will be far better off with a refractor, while the deep-sky enthusiast will in general prefer a reflector.
13. Aperture for aperture, a refractor is more efficient than a reflector, and it is also easier to maintain.