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by chantepierre
181 days ago
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Small mirrors with a very low F-ratio are also something that you need to grind yourself. I have a 6" f/2.8 telescope and a 8" f/3.5 hyperbolic + ross telescope, and both aren't commercially available while being small mirrors ! Progress on my 16" f/3.2 is currently stalled though.. a multi-year project indeed. |
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