Measurement techniques for large aspheric optics - LOFT, Large ...
Measurement techniques for large aspheric optics - LOFT, Large ...
Measurement techniques for large aspheric optics - LOFT, Large ...
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SCOTS Comparison with Interferometry<br />
Wow!<br />
Principal test<br />
21 polynomials subtracted<br />
0.32 μm rms<br />
SCOTS<br />
21 polynomials subtracted<br />
0.35 μm rms<br />
difference<br />
0.16 μm rms<br />
All maps show surface error in microns. Circle indicates 8.4 m diameter.