太たい陽よう望ぼう遠えん鏡きょう

noun

solar telescope; helioscope

A telescope designed for observing the sun, often equipped with special filters. The term helioscope is less common in everyday English but may appear in technical contexts.

• 天てん文もん台だいに新あたらしい太たい陽よう望ぼう遠えん鏡きょうが設せっ置ちされた。

  A new solar telescope was installed at the observatory.