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oval or round secondary
Hello. This is my first post and I have two questions.
Is there a mirror maker in the Port Macquarie/Wauchope area? I hope to get come information on testing equipment and tests.
Why are the secondary mirrors on reflectors made an oval shape? The reflection from the primary mirror creates an oval shape on the seconday, it being at 45deg angle. Could a round mirror, or even a rectangular or square one of sufficient size be used and would it be cheaper to make? Has anyone tried to use a piece of a normal mirror like a bathroom one?
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