Computer-aided two-coordinate autocollimator for measuring small angular deviations

A computer-aided autocollimator for measuring small angular deviations is described. Small angular displacements are determined by the displacement of the laser beam image on a CCD array in the focal plane of a lens. Automatic control of the displacement systems allows one to test many times the systems of precision remote displacement of optical components with a minimum detectable angular deviations of about 0.2″. Original Russian Text ? A.V. Kirsanov, T.V. Barmashova, V.V. Zelenogorskii, A.K. Potemkin, 2009, published in Pribory i Tekhnika Eksperimenta, 2009, No. 1, pp. 155–157.