| What
is a "Refractor"? |
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A refracting or refractor telescope is a type of optical telescope
which refracts light at each end using lenses. This refraction causes
parallel light rays to converge at a focal point; while those which were
not parallel converge upon a focal plane. This can enable a user to view
a distant object as if it were brighter, clearer, and/or larger. These
are similar to microscopes. The monocular is a type of refractor. A typical
refractor has two lenses, an objective lens and an eyepiece lens. The
objective lens has two pieces of glass (with different densities), "crown" and "flint
glass". Each side of each piece is ground and polished, and then
the two pieces are glued together. The curvatures are designed to cancel
chromatic and spherical aberration. |
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| Telescope
Designs |
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 In
general, there are two kinds of telescope systems. One
is the Optical Telescope. This is our main manufacturing
base. The other is the radio telescope, which is used
for National & Scientific research . We manufacture
only a few of these. |
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more subject related optics.. |
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| Telescope
Reviews |
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| Telescope reviews from our
clients and end users. Please feel free to post your
own comments. |
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| Item No. XWJ |
| 70mm (2.8"), FL=300mm |
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