Chinese Optics Letters, Volume. 7, Issue 7, 07590(2009)
Quantitative measurement of \Phi630 mm F/1.34 parabolic surfaces with Ronchi grating test method
The Ronchi grating is applied to measure the large-aperture aspheric surfaces in a quantitative way on the basis of self-made software which includes Ronchi null grating design, collection of Ronchi graph, and data processing. The measured concave parabolic mirror has a diameter of 630 mm and an F number of 1.34. The measurement result is approximately the same as that of the ZYGO interferometer. This analysis software and test method establish a good foundation for the quantitative measurement of the big error about the large-aperture aspheric surfaces of the next generation telescope.
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Baiping Lei, Fan Wu1. Quantitative measurement of \Phi630 mm F/1.34 parabolic surfaces with Ronchi grating test method[J]. Chinese Optics Letters, 2009, 7(7): 07590
Received: Oct. 22, 2008
Accepted: --
Published Online: Jul. 24, 2009
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