Port Blair, Union Territory of Andaman and Nicobar Islands, IN Free

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2 years ago ID #8957


[url=]Cosmic Scope[/url] Telescopes that have Porro prisms are made the use of high-density glass (i.E., BAK4). This creates a circular go out student when viewing via Cosmic Scope. Some of the advantages of going with BAK4 over say its competing material, BK7, encompass higher optic excellent, better refractivity (i.E., the threshold of the FOV and the picture as a whole may be brighter) and is simple on the budget. [url=][/url]


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