Eyeglass plates in the making / 125SD-BINO メガネフレーム

The diameter of the OTA is the same with the last one, but this time, FPD is larger by 8mm than that of the former one.

前回の五藤10cm-BINOと同じ鏡筒径ですが、EMSが大型ハウジング(+大型ヘリコイド)仕様のため、Dが8㎜だけ広くなります。