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Silicon carbide mirrors
Could this usher in a new era of lighter weigh large aperture
Dobs? I hear they are using this material on most NASA missions requiring mirrors but I don't know if it's possible to make them beyond a small (4"?) size. -Rich |
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"Richard" wrote in message ... Could this usher in a new era of lighter weigh large aperture Dobs? I hear they are using this material on most NASA missions requiring mirrors but I don't know if it's possible to make them beyond a small (4"?) size. -Rich 40 cm http://www.trexenterprises.com/mirror.html |
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MAT wrote:
"Richard" wrote in message ... Could this usher in a new era of lighter weigh large aperture Dobs? I hear they are using this material on most NASA missions requiring mirrors but I don't know if it's possible to make them beyond a small (4"?) size. -Rich 40 cm http://www.trexenterprises.com/mirror.html Yeah, I was going to chime in that we used a 0.4m SiC mirror for the Starlite experiment on STS-95. That would have been much more interesting if one of the mounting bearings hadn't frozen by the time the UV detectors had outgassed enough not to be fried by operating voltage... For that application, the mirror construction was particularly interesting because an SiC coating has excellent deep-UV reflectance. Bill Keel |
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