Abstract
Aberrations in optical systems pose critical challenges to the precision of astrometric and photometric measurements, directly impacting our ability to accurately determine the positions and brightness of celestial objects. There are different aberration types including spherical aberration, coma, diffraction rays, motion blur, astigmatism, flare light, field curvature, vignetting, and chromatic aberration. They cause distortions in the recorded images, affecting the accuracy and reliability of measurements in both astrometry and photometry. This review aims to offer insights into both the theoretical and practical aspects of aberration control, providing a foundation for future advancements in precision astrometry and photometry, essential for understanding the Universe with unprecedented accuracy
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