Celestron Omni Plössl
Celestron's Omni series consists of 7 Plössl eyepieces which are of very high quality. The Celestron Omni Plössl eyepieces are made up of four small lenses which focus the light together. Because of this construction, the light is aimed more precisely and chromatic aberration is countered. This increases contrast and details will become more visible. The eyepieces have a field of view of 60 degrees and are available in seven versions with focal lengths of 4, 6, 9, 12, 15, 32 en 40mm. The shorter the focal length, the higher the magnification. A longer focal length does yield a lower magnification. However, a longer focal length also produces a wider and sharper image.
The lenses in the eyepiece feature Celestron's multi-layer coating. This coating eliminates unnecessary reflections. This allows the light to be better focused. In addition, chromatic aberration is considerably reduced this way.