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Tagged with: RBT

A Practical Implementation of the Random Ball Test (ABSTRACT)

ABSTRACT: The random ball test for calibrating interferometer transmission spheres was reported about 8 years ago but there did not appear to be an ideal ball. Now, nearly ideal balls are available. The paper describes commercially available hardware for performing the random ball test and example results from the test.

Calibration of Interferometer Transmission Spheres (ABSTRACT)

ABSTRACT: A readable copy of the original paper on the Random Ball Test (RBT) authored at NIST that was published in a non-archival meeting journal. Even here the figures are not legible. For better example figures see "A practical implementation of the random ball test".

Interferometer Calibration using the Random Ball Test (ABSTRACT)

ABSTRACT: Paper by W. Cai, et. al., comparing experimental results in the Random Ball Test (RBT) between using a clean ball and systematic measurement versus a somewhat dirty ball and casual measurement.  The results gave identical precision within reasonable statistical limits.

Limits for Interferometer Calibration Using the Random Ball Test (ABSTRACT)

ABSTRACT: A paper by P. Zhou examining the precision with which the Random Ball Test (RBT) can be done as a function of the spatial frequency of the errors in the transmission sphere, the radius of curvature of the ball used and diffration at the edge of the aperture. The conclusion is that the RBT works most precisely for fast transmission spheres.

Case Studies & Testimonials

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    Suresh Sivanandam
    Dunlap Institute for Astronomy and Astrophysics
    University of Toronto

     

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    Dunlap Institute for Astronomy and Astrophysics
    University of Toronto

     

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    Hart Scientific Consulting International, LLC
    Tucson, Arizona

     

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