With the Series 4000 QX Wide Angle 20.0mm eyepiece, Meade has succeeded in producing great-quality optics with impressive views at a low price. There's lots of features here found in much more expensive eyepieces, such as the fully multicoated optics and the blackened lens edges to both transmit lots of light and eat up internal reflections. It accepts Meade's collection of 1.25" threaded astronomy filters to enhance your viewing experience.