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Glossary | Telescope accessories | General | Series | OMNI

Inexpensive Plössl eyepieces, the ideal addition to every entry-level telescope.

Due to their four-lens design, Plössl eyepieces cause almost no chromatic aberration. Some very simple telescopes are offered with three-lens or even two-lens eyepieces, which often cause significant chromatic aberration and loss of contrast. An eyepiece from the OMNI series is therefore a very good and inexpensive addition to every entry-level telescope.