Celestron f/6.3 Reducer Corrector for C Series Telescopes<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> This combination focal reducer and field corrector lens accessory works with all Celestron 5"， 6"， 8"， 9 1/4"， 11" and 14" Schmidt-Cassegrain telescopes </span></li><li><span class="a-list-item"> This clever accessory makes it possible to have a dual focal ratio instrument， without sacrificing image quality </span></li><li><span class="a-list-item"> The Reducer/Corrector is f/6.3 for C5， C6， C8， C9¼ and C11 telescopes and f/7 for the C14 telescope </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/21DVRHDMM5L.jpg" noproxy>