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<p>[QUOTE=&quot;Shangas, post: 31613, member: 360&quot;]According to some videos I&#039;ve seen, that sliding extension at the front is both a sun-shield and a dew-shield, to keep sun-glare away from the lens, and to prevent condensation on the glass. </p><p><br /></p><p>I&#039;ll try doing some research about C. Simon. But it won&#039;t be easy. I don&#039;t even know where I&#039;d start. </p><p><br /></p><p>What kind of people would use a telescope like this? Sailors? Seamen? Navy men? Astronomers/star-gazers? Would it have been expensive back when it was made?[/QUOTE]</p><p><br /></p>

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