The best beginner telescopes treat you to awe-inspiring views of planets, galaxies and other cosmic wonders with minimal faff. We've put beginner telescopes from Bresser, Celestron, Sky-Watcher and ...
A high-resolution autocollimation range extension method based on an array of off-axis light sources
Abstract: In autocollimation technology, due to limitations in the aperture of the collimating objective and the size of the sensor, high-resolution angular measurements at the nanoradians level are ...
THE light-scattering method of molecular weight determination involves the measurement of the difference in refractive indices of a solution and its solvent. To this end special differential ...
A novel hollow cylindrical cube-corner reflector (HCCCR) for the autocollimator (AC) is proposed. The angle measuring range of AC will be effectively increased by using the parallel propagation ...
Spacecraft Structures and Mechanisms Group, Surrey Space Centre. My technical background is in aerospace structures and mechanisms, and my activities span from academic research & teaching to ...
An ultra-sensitive angle sensor employing single-cell photodiodes, which allows tighter focusing leading to a higher angular resolution better than 0.001 arc-second, has been designed based on laser ...
Abstract: propose a new measurement system of autocollimation form laser grating heterodyne interferometer. Take grating diffraction and polarization optics as theoretical foundation, combined with ...
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