可以透過這個轉接環將某些1.25英吋的天文目鏡接口（M28.5x0.6）轉為Nikon觀鳥鏡可用的螺紋接口（M31.5x0.75）。
適用於Nikon ED50、60、72、85 Fieldscope系列觀鳥鏡。並非每個天文目鏡皆可轉接，視該目鏡的結構與焦長而定。
每一部印表機的公差略有不同，因此可能需要稍微調整比例或是印完之後需要打磨。

This is an 1.25" astronomical eyepiece adapter for Nikon Fiedlscope, including ED50, 60, 72, and 85.
NOT every 1.25" astronomical eyepiece can fit in for Nikon Fieldscope, it depends on the focal length and structure of the eyepieces.
Tolerence is always slightly different from printer to printer, so some minor scaling or post print filling maybe required.

Known compatible eyepieces including:
SWA 20mm
WA 17mm
EF 19mm
EF 16mm
SWA 15mm
EF 12mm
Vite 10mm Aspheric
ES 5.5mm

Known incompatible eyepieces:
Svbony 7-21 Zoom

解析度Resolution：0.15mm
壁厚Perimeter：1.2mm
填充Infill：100%
列印時間Print Time：12min
使用設備Printer：Makerbot Replicator2
材料Material：含碳纖維的PLA（一般PLA亦可）Carbon Fiber reinforced PLA(General PLA will do)
後處理Post Processing：列印完之後，可用刀片刮除底部因象腳效應溢出的餘料，避免造成咬合時的阻礙。Use a knife to cut off the extra rim resulted from the so called "elephant foot effect".