The observatory tour package includes a lecture on sidereal time and night sky photography.

天文台導覽套裝行程包含一場關於恆星時與夜空攝影的講座。

Our navigation software uses sidereal data to help ships confirm their position at sea.

我們的導航軟體使用恆星資料，協助船隻在海上確認位置。

The research grant will fund a new telescope for tracking sidereal movements more accurately.

這筆研究補助金將資助一台新望遠鏡，以更精確地追蹤恆星運行。