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Choosing the Correct Eyepiece

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Choosing the Correct Eyepiece

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The eyepiece is an integral part of any compound visual system. Its purpose is to magnify the real image formed by an objective or intermediate relay system. For this reason, the eyepiece design affects the magnification, image brightness, field flatness, and aberrations of these systems. As in all optical systems, the designer trades one advantage for another, in an effort to optimize the eyepiece for specific applications. In choosing an appropriate eyepiece, one needs to consider the particular system being assembled. Since each eyepiece has individual advantages, a specific system may favor one eyepiece over another.

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