Get from Amazon : http://www.amazon.com/gp/product/B0056F0ZAY?tag=wayofcats-20 <br /> <br />Orion 8894 0.8x Focal Reducer for Refractor Telescopes <br /> <br />Requires 55mm of back focus <br />Features fully multi-coated 38mm clear aperture optics housed in a sleek <br />Enables a refractor to both acquire a larger field of view and to capture bright <br />Reduces an astrophotography refractors effective focal length by a factor of 08x :
