We often hear friends who come to buy telescopes ask: "How far can your telescop...
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There are three types of astronomical telescopes: refracting astronomical telesc...
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1. Specifications of the telescope The specifications of the telescope are expre...
VIEW DETAILS >If you divide the aperture of the objective lens (in mm) by the magnification fa...
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1. Specifications: For example, 8×30 means that the optical power of the lens is...
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Most people believe that the higher the magnification of the telescope, the bett...
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One day in the early 17th century, Hans Lippershey, the owner of an optical shop...
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Almost all mobile phones nowadays have camera functions. Most of the friends who...
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