星盘岛是南极洲的岛屿，位于葛拉汉地的特里尼蒂半岛，处于杜科尔普斯角西北面23公里的布兰斯菲尔德海峡，长5公里，由法国探险队发现，现时由南极条约体系管理。

Astrolabe Island, located at 63°17′S 58°40′W / 63.283°S 58.667°W / -63.283; -58.667, is an island 5 km (3 mi) long, lying in the Bransfield Strait 23 km (14 mi) northwest of Cape Ducorps, Trinity Peninsula in Antarctica. It was discovered by the French expedition, 1837–40, under Captain Jules Dumont d'Urville, and named by him for his chief expedition ship, the Astrolabe. The island was photographed from the air and triangulated by FIDASE, 1956-57.