The TS80 built in April of 1972 was the first triplet apochromat Takahashi telescope built.

1972年4月高桥第一款三片式复消色差（APO）望远镜TS80问世。

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The TS80 built in April of 1972 was the first triplet apochromat Takahashi telescope built.

1972年4月高桥第一款三片式复消色差（APO）望远镜TS80问世。

youdao