Browsing by Autor "Miguel Alonso"

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    Calibration of Gauge Block by Mechanical Comparison
    (2025) Diego Aldo Bellelli; Carlos Collin Castellanos; Miguel Alonso; Kevin Lemessy; Arnoldo Rocha; Gabriela Burgos; Edison Condor; César Veiga García; Patricia Suazo; Alejandro Illanes
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    Double light source Ronchi Tester for detection of ruling rotations
    (IOP Publishing, 2024) Juan Núñez; Javier Salinas-Luna; Yuliette Katinka Nuñez-Moreno; J. H. Castro-Chacón; José Luis Monay-Arredondo; Benjamín Martínez-Chávez; Gustavo Enrique Ramos-Alcaraz; Marlen Meza‐Sánchez; Miguel Alonso
    Abstract In this work, a modified Ronchi tester with a double light source has been implemented for evaluating and minimizing the rotation angle of the Ronchi ruling. The ruling rotations produced by positioning errors can become very small and could be going unnoticed (0.1°), however we have demonstrated that for these angle sizes the aberrations in the wavefront can not be completely neglicted. Accordingly with a rotatory mechanical device for correctioning the Ronchi ruling has been also added with this proposals. With our aim, in spite of non-straight shape that the ronchigrams can present in the patterns, the process of the ruling rotation degree measuring has hurled some experimental results when three concave mirrors: a concave spherical mirror, a concave parabolic mirror (the primary mirror of a Newtonian telescope) and a spherical concave mirror (the primary mirror of a Maksutov-Cassegrain telescope) have been tested.