Abstract
Various refractive null-testing arrangements have been used over the years for testing concave nonspherical mirrors. This paper presents a method for null testing that uses a single plano-convex lens to compensate for the spherical aberration of a concave conic mirror when tested at its center of curvature. This testing method, called the Ross null test, requires a high-quality null lens and a standard Foucault test apparatus. This paper presents graphical and numerical data that provide the necessary parameters for implementing the Ross null test for mirrors with focal ratios ranging from f/3.5 to f/10 and for conic deformations ranging from eccentricities of 0.70-1.50.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
