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The Bosscha Observatory is the oldest astronomical observatory in Indonesia, located in Lembang, West Java, approximately 15 kilometers north of Bandung. Established in 1923 by the Nederlandsch-Indische Sterrenkundige Vereeniging, it serves as a premier research institution for astronomy in Southeast Asia and is currently managed by the Bandung Institute of Technology (ITB). Housing the iconic Zeiss double refractor telescope under its distinctive white dome, the site is recognized as a national cultural heritage asset and continues to facilitate celestial observations and public science education.