Thread: Sharper than Hubble: Large Binocular Telescope achieves major breakthrough
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Old 04-08-2010, 11:57 AM
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Moon (James)
This sentence is false

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Join Date: Oct 2008
Location: Melbourne
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Quote:
The concave secondary mirror is 0.91 metres in diameter (3 feet) and only 1.6 millimetres thick.
I would be happy to take that as my primary mirror!
How do you grind such a mirror?
James
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