TS 1.25" Plössl Eyepiece with 40 mm focal length, 46° apparent field of view

TS Optics 40 mm Plössl Eyepiece with 1.25" barrel size and 46° apparent field of view

A good Plössl eyepiece outperforms a simple Kellner. We can offer this type of eyepiece at a price for which you would get only more simple eyepieces elsewhere. Nevertheless, the features are quite impressive.

The 40 mm Plössl offers maximum field of view with 1.25" and is a
fine overview eyepiece. With its long focal length of 40 mm, it is
especially suited for slow telescopes like Cassegrains or refractors not
faster than f/8. The image stays still bright, making the eyepiece well suited for observing nebulae, open star clusters and galaxies, but also
for centering of objects.

Areas of application of Plössl eyepieces

Through the four-element design, the Plössl is a true all-rounder. It does not introduce an additional chromatic aberration to the system, in opposite to more simple eyepieces with fewer elements. As a consequence, these eyepieces can be very well used for observing the moon and planets with higher magnifications.

At lower magnifications, Plössl eyepieces are well suited for observing nebulae, star clusters and galaxies, they convince with a field of view relatively free of distortion.

Astrophotographers can also work well with Plössl eyepieces, as they are well suited for eyepiece projection. The MgF2 coating prevents disturbing reflections and provide good contrast. However, many projection adapters are too narrow for the Plössl eyepieces with 32 or 40 mm focal length.

Delivery contents

• TS 40 mm Plössl eyepiece

TS Optics 40 mm Plössl Eyepiece with 1.25" barrel size and filter thread, fully coated for more contrast