TeleVue DIOPTRX 1.00 – Astigmatism Corrector

TeleVue DIOPTRX 1.00: Astigmatism Corrector: 1.00 diopter astigmatism corrector

The Dioptrx with a power of 1.00 diopter corrects astigmatism of the eye directly at the eyepiece. You choose this power when the cylinder value on your glasses prescription is at or closest to 1.00.

This is how you look without glasses, with the full eye relief of your eyepiece, and without the reflections that glasses add. For anyone who sees stars as streaks as soon as they take off their glasses, this is the solution.

How the Dioptrx works

Astigmatism in the eye turns every star into a streak, and the effect is greatest precisely during dark adaptation, when the pupil is wide open. Glasses correct this, but they take up eye distance and catch stray light.

The Dioptrx is a cylindrical lens that you screw onto the eyepiece. You adjust the axis by rotating the lens until stars become points, and then you look without glasses with full correction.

Choosing the right strength

The strength you need is the cylinder value from your eyeglass prescription, the number next to "cil" or "cyl." Use the value from the eye you see with.

If your cylinder value falls between two diopter strengths, choose the closest one; small deviations will not be noticeable to the telescope. The spherical component of your prescription does not matter: you can simply correct it with the focusing knob.

Featured accessories

The Dioptrx fits any TeleVue eyepiece with the Dioptrx mount, including the Ethos, Delos, DeLite series, and the longer Panoptics and Ploessls. Some eyepiece types require a separate adapter; you'll find those in this range.

For whom yes and for whom no

• ✓ Observers with astigmatism who want to look without glasses
• ✓ Owners of Dioptrx-compatible TeleVue eyepieces
• ✓ Whoever sees streaky stars with wide pupils
• For those without astigmatism: regular myopia is already corrected by the focuser
• Eyepieces without Dioptrx mount or adapter

Specifications

You can find the complete product line for this merk at the TeleVue merk Page.