TeleVue 0.50 DIOPTRX astigmatism corrector (16891)

If you have astigmatism, DIOPTRX offers an effective way to achieve sharper views through your telescope. While your telescope’s focuser can compensate for near-sightedness or far-sightedness, DIOPTRX is specifically designed to correct astigmatism. This accessory attaches securely to the tops of more than 20 long eye-relief Tele Vue eyepieces, delivering crisp, full-field images.

DIOPTRX correctors are available in strengths ranging from ¼ diopter to 3½ diopters. Models are offered in ¼ diopter increments up to 2½ diopters, and in ½ diopter steps up to 3½ diopters. The unit can be rotated for optimal alignment, and engraved markings on the barrel make orientation easy to monitor. Simply select the DIOPTRX version that matches your astigmatism prescription. All lenses use multi-coated glass and are housed in anodized aluminum with rubber eyeguards.

Benefits of Using DIOPTRX Instead of Eyeglasses

• The DIOPTRX remains perfectly aligned with the eyepiece optics, preventing visual distortions that can occur from eyeglasses being off-center or misaligned.

• You can rotate the DIOPTRX to precisely match your astigmatic axis, allowing for real-time adjustment as your head position or vision changes.

• DIOPTRX features superior multi-coating compared to most eyeglasses, providing better light transmission and reducing reflections more effectively than uncoated glasses.

• The lens is typically cleaner and less prone to scratches and smudges than everyday eyeglasses.

• Using DIOPTRX allows you to experience the highest possible image contrast, which can be reduced when wearing eyeglasses. Removing your glasses often reveals an improvement in contrast, and DIOPTRX is designed to preserve this enhanced view.