Which optical outcome compromised early astronomical observations using single-element lenses in telescopes?

💡 Explanation

When white light passes through a single lens, chromatic aberration occurs because different wavelengths refract differently, causing colored rings/fringes and blurring the image. Therefore chromatic aberration blurs the image, rather than dimming (spherical), distorting shape (comatic), or displacing the object (astigmatism), which result from different lens imperfections.

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