Tele Vue Dioptrx 3.00 Astigmatism Corrector - DRX-0300 13mm Eyepieces A great Mars filter for

A great Mars filter for all telescopes

with less need to move the binoculars

blackened lens edges

Celestron Tripod adapter threads are included on the 42mm sizes

using Celestron'''s proprietary XLT coating technology for superior optical performance

Tele Vue Dioptrx 3.00 Astigmatism Corrector - DRX-0300 13mm Eyepieces A great Mars filter forTeleVue Dioptrx 3. 00 Astigmatism Corrector for TeleVue Eyepieces Got astigmatism? Get the "cure" Your telescope's focuser is used to compensate for your near or far sightedness; TeleVue Dioptrx compensates for your astigmatism. These units attach and lock onto the tops of over 20 long eye relief Tele Vue eyepieces to achieve the sharpest full field viewing possible. TeleVue Dioptrx models are available in . 25 to 3. 25 diopter (1 4 steps from . 25 to