APM Telescopes’ triplet Universal SuperED Reducer/Flattener 0.75 is for Russian-made TMB and APM apochromatic refractors. The unit offers a 0.75x reduction in focal length. It has a 2-inch (52mm) ...
Celestron’s EdgeHD 0.7x Reducer Lens makes your EdgeHD 1400 one full f/stop faster than f/11 and increases the field of view by 43 percent. All lens elements are made from lanthanum glass with full ...
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