Between 1977 and 1979 Meade had introduced a "Series 2" Orthoscopic line of eyepieces available in both the 1.25 inch barrel size or the Japanese standard barrel 0.965 inches. The "Research Grade" line of both Erfles and Orthoscopic are of course retained and were successful for many more years before production ended. Both the Series 2 Orthoscopic eyepieces and Research Grade are all described as multi-coated and parafocalized. Note that several 2 inch eyepieces are also advertised - a 60 mm Kellner and a 32mm Erfle . (They are not described under a Research or Series 2 ocular.) This is per S & T - Sept 1979.

Between 1977 and 1979 Meade had introduced a "Series 2" Orthoscopic line of eyepieces available in both the 1.25 inch barrel size or the Japanese standard barrel 0.965 inches. The "Research Grade" line of both Erfles and Orthoscopic are of course retained and were successful for many more years before production ended. Both the Series 2 Orthoscopic eyepieces and Research Grade are all described as multi-coated and parafocalized. Note that several 2 inch eyepieces are also advertised - a 60 mm Kellner and a 32mm Erfle . (They are not described under a Research or Series 2 ocular.) This is per S & T - Sept 1979.