| 11. | Carina is home to several double stars and binary stars.
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| 12. | There are several naked-eye double stars in Grus.
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| 13. | Omicron Draconis is a double star divisible in small telescopes.
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| 14. | He specialized in the observation of double stars, asteroids and comets.
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| 15. | He developed the Finsen eyepiece interferometer to measure very close double stars.
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| 16. | "Physical double stars should go in the subcategory Binary stars.
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| 17. | Both actors are listed as " double stars " of the series.
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| 18. | The Double Star data are publicly available via this archive.
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| 19. | Galileo then produced a detailed record of the double star.
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| 20. | Gamma Centauri is a double star located about from Earth.
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