Task: Translation
Input (English): English sentence: However by 1665 even Fabri was persuaded to accept Huygens' ring theory as improving telescopes confirmed his observations.
Output (Tagalog): Subalit sa pamamagitan ng 1,665 kahit Fabri ay hikayat na tanggapin Huygens' singsing teorya bilang pagpapabuti ng teleskopyo-confirm ang kanyang mga obserbasyon.