Thread: Testing secondary mirrors
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Old 21-08-2019, 04:03 PM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
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Dave,
If you test the primary with the Rochi grating (or Foucault testing) to determine any defects, then introduce the secondary in the same test, any additional defects seen must originate on the secondary....
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