{"product_id":"2-25-dioptrx-astig-corrector","title":"2.25 DIOPTRX Astig. Corrector","description":"\u003cdiv\u003e\n\u003cp\u003eGot astigmatism? Get the \"cure\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.televue.com\/images\/icon\/TVLogo_Astig_logp.gif\"\u003e\u003c\/p\u003e\n\u003cp\u003eYour telescope's focuser is used to compensate for your near- or far-sightedness; 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. DIOPTRX™ models are available in ½ to 3½ diopter and are rotatable for tuning to the best orientation. A series of engraved letters on the barrel helps to monitor orientation. Simply choose the DIOPTRX™ model that matches your eyeglass prescription for astigmatism. All lenses are multi-coated glass in anodized aluminum housings with rubber eyeguards.\u003c\/p\u003e\n\u003cdiv class=\"pageSectionTitle\"\u003eBenefits of using Dioptrx over eyeglasses\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e1. You're more likely to see a sharper, higher contrast image, because:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eA. The Dioptrx is always completely aligned to the eyepiece optics, eliminating aberrations from a decentered mismatch of eyeglass power and astigmatic axis.\u003c\/p\u003e\n\u003cp\u003eB. Dioptrx can be rotated to exactly compensate for the astigmatic axis angle in real time, since both head angle and age can vary your eyesight astigmatic angle.\u003c\/p\u003e\n\u003cdiv\u003eThe easiest and quickest way to use Dioptrx after attaching it to the eyepiece is to center a star in the field-of-view and leave it slightly out-of-focus so it shows as a small disk. Then rotate the Dioptrx top until the star looks round. Then finish focusing the telescope.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eC. Dioptrx likely has better multi-coatings than eyeglasses, and certainly is better in transmission and reflection reduction than uncoated eyeglass.\u003c\/p\u003e\n\u003cp\u003eD. Dioptrx is more likely to be cleaner than eyeglasses, which may have scratches and smudges from constant use and wear and tear.\u003c\/p\u003e\n\u003cp\u003eE. Dioptrx allows seeing your normal maximum contrast that eyeglasses can diminish (remove your eyeglasses and see how contrast improves in normal vision).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e2. You're more likely to see the full field in 100° Ethos eyepieces because your eyeglasses are more limiting in \"effective eye-relief\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cimg class=\"img_center\" src=\"https:\/\/www.televue.com\/images\/icon\/TVLogo_Astig_logp.gif\"\u003e\n\u003c\/div\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374571094304,"sku":"DRX-0225","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/DRX_0025_DIOPTRXcopy.jpg?v=1774552236","url":"https:\/\/firstlightastro.com\/products\/2-25-dioptrx-astig-corrector","provider":"First Light Astro","version":"1.0","type":"link"}