A pre owned 0.5x focal reducer with c-thread adaptor. This will fit onto CCD cameras and webcams using the C Thread, such as ZWO ASI120mini and the Altair Astro GPCAM 130, 224. The optics are clean. There is some paint rubbing on the internal threads
A pre owned 0.5X focal reducer in very good condition. The optics are clean. Comes with case. Female 1.25" eyepiece filter thread can be attached to CCD cameras and eyepieces, effectively reducing the focal length of the telescope by 50%.