(Q189619)
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Identifiers
Sitelinks
Wikipedia(6 entries)
- dewiki Zenitprisma
- enwiki Star diagonal
- eswiki Prisma cenital
- frwiki Renvoi coudé
- trwiki Çapraz ayna
- zhwiki 天顶镜
accessory for astronomical and geodetic telescopes for observing zenith nearby stars