M48x0.75 Adapter for FFFR 400-500 A good Focal Extender adds

A good Focal Extender adds some real versatility to your telescope accessory line-up

and plastic parts

Its air-spaced triplet lens system combines genuine HOYA FCD100 extra-low dispersion (ED) glass with proprietary EMD enhanced multi-layer coatings to virtually eliminate chromatic aberration and deliver razor-sharp

jewelry and other metal objects up to 6 inches below the surface

making it easier to track subjects and scan surroundings

M48x0.75 Adapter for FFFR 400-500 A good Focal Extender addsThis adapter replaces the M42x0. 75 Adapter for CCD Camera that comes standard with the Explore Scientific 3 inch Field Flattener 0. 7x Focal Reducer. Must be purchased separately from the FFFR. Item Number M48 0750. 7x Weight . 15lb . 08kg