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Observed and described by Lacaille, Telescopium Astronomicus is located between Ara and Sagittarius on the edge of the Milky Way. In his catalogue, Bailey had it restricted to the south of Scorpio, Sagittarius and Corona Australis. There is another Telescopium referred to as Telescopium Herschetti in honor of William Herschel. It was described by Abbellell in 1781 as lying between Lynx and Gemini. It is visible in August.
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| Symbol | Tel |
| Right Ascension |
06:47
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| Declination | -49 |
| Diameter (°) | 12 |
| Area (square °) | 252 |
| Opposition |
Jul 03
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| Size Rank |
57th
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| Brightness Rank |
67th
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| Genitive | Telscopii |
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