Baader Planetarium Classic Abbe Orthoscopic 6mm Eyepiece, 4-element design, full multi-coatings for the best planetary views.

• 6mm focal length
• Volcano Top
• Rubber eyecup included
• 45 degree apparent field
• 1.25" diameter--threaded for filters

Classic Orthoscopic eyepieces are optimized for best possible contrast and image sharpness especially for observing the moon and the planets. Their orthoscopic (without distortion) properties also make them ideal for eyepiece projection photography.

Angular magnification distortion and rectilinear distortion are both held to a minimum, yielding undistorted images essential for high resolution viewing.

Image sharpness on the optical axis is better than in typical wide angle eyepieces, so more detail can be seen..

"Phantom" Full Multi-Coating:

Baader Orthoscopic eyepieces feature a state-of-the art multicoating on all glass-to-air surfaces. This "Phantom" multicoating offers a particularly high transmission.

Abbe Orthoscopic eyepieces consist of a cemented triplet field lens group and a separate singlet eye lens.
Cementing three lenses requires sophisticated machinery and a lot of experience, but the result is a superb image sharpness on the optical axis - better than in ordinary Plossls or typical wide angle eyepieces.

Only eyepieces with this precise lens layout are considered Abbe Orthoscopic eyepieces.

Baader Classic Orthoscopic eyepieces come with a "wing" eyeguard to shield the eye from contrast-robbing peripheral light and have "Volcano"-shaped tops to yield improvements in eye relief at all focal lengths.

1.25" diameter, 45 degree apparent field.