Shooting the moon is a perspective method, and a long focal length lens should b...
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1. Classification of lens materials; Glass lenses include optical glass lenses a...
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1. Ensure that the light path is smooth; A telescope is an instrument that colle...
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When you first buy an astronomical telescope, you'll find three styles. In order...
VIEW DETAILS >The primary mirror of an astronomical telescope plays a leading role in the obse...
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Recently, I have received a lot of questions. One of them is that the editor bel...
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Adaptive optics is an optical system that can effectively resolve large dynamic ...
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If people who have been exposed to binoculars may not be very familiar with this...
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