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NGC 6153
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NGC 6153 (also PN G341.8+05.4, ESO 331-6 and HD 148687) is a magnitude +11.5 planetary nebula located 4,000 light-years away in the constellation Scorpius. The planetary nebula was discovered by English astronomer Ralph Copeland using a 6" refractor from Puno in the Andes on the 27th May 1883. Ri...
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NGC 2243
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Title: Lithium abundance in the metal-poor open cluster NGC 2243 Authors: P. Francois, L. Pasquini, K. Biazzo, P. Bonifacio, R. Palsa Lithium is a fundamental element for studying the mixing mechanisms acting in the stellar interiors, for understanding the chemical evolution of the Galaxy and t...
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NGC 6316
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NGC 6316 (also ESO 454-SC4 and GCL 57) is a magnitude +8.1 globular star cluster located 33900 light-years away in the constellation Ophiuchus. The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on...
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NGC 6355
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NGC 6355 (also ESO 519-SC15 and GCL 63) is a magnitude +8.6 globular cluster located 30000 light-years away in the constellation Ophiuchus. The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the...
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NGC 6144
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NGC 6144 (also ESO 517-SC6, IC 4606 and GCL 42) is a magnitude +9.0 globular cluster located 29000 light years away in the constellation Scorpius. The cluster is positioned 50' to the ENE of Messier 4. The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 in...
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NGC 6287
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NGC 6287 (also GCL 54) is a magnitude +9.3 Globular Cluster located 6800 light-years away in the constellation Ophiuchus. The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 21st May 1784. Ri...
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NGC 6369
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NGC 6369 (also Little Ghost Nebula) is a magnitude +12.9 planetary nebula located 2000 light-years away in the constellation Ophiuchus. The nebula was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 21s...
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NGC 6401
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Enigmatic Cluster Targeted by Hubble The NASA/ESA Hubble Space Telescope has used its powerful optics to separate the globular cluster NGC 6401 into its constituent stars. What was once only visible as a ghostly mist in the eyepieces of astronomical instruments has been transformed into a stunni...
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XO-1b
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Title: Probing the terminator region atmosphere of the Hot-Jupiter XO-1b with transmission spectroscopy Authors: G. Tinetti, P. Deroo, M. R. Swain, C. A. Griffith, G. Vasisht, L. R. Brown, C. Burke, P. McCullough We report here the first infrared spectrum of the hot-Jupiter XO-1b. The observati...
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NGC 5466
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NGC 5466 is a class XII globular cluster in the Boötes constellation. Located 51,800 light years from Earth and 52,800 light years from the Galactic centre, it was discovered by William Herschel on May 17, 1784 and as H VI.9. It is thought to be the source of a stellar stream discovered in 2006. [url=ht...
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NGC 5662
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NGC 5662 (also Melotte 127, Collinder 284, ESO 175-SC10 and OCL 928) is a magnitude +5.5 open star cluster located 21720 light years away in the constellation Centaurus. The cluster was discovered by French astronomer Nicolas Louis de Lacaille using a 1.27 cm (0.5 inch), 8x magnification, refract...
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NGC 5834
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NGC 5834 (also NGC 5824, ESO 387-SC1 and GCL 31) is a magnitude +9.1 globular star cluster located 104600 light-years away in the constellation Lupus. The cluster was discovered by Scottish astronomer James Dunlop using a 22.86 cm (9 inch) f/12 reflecting telescope at Paramatta, New South Wales, o...
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NGC 6352
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NGC 6352 (also Caldwell 81, Collinder 328 and GCL 64) is a magnitude +7.8 globular star cluster located 19570 light-years away in the constellation Ara. The cluster was discovered by Scottish astronomer James Dunlop using a 22.86 cm (9 inch) f/12 reflecting telescope at Paramatta, New South Wales...
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NGC 6204
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NGC 6204 (also ESO 277-SC10, Collinder 312 and OCL 982) is a magnitude +8.2 open star cluster that contains at least 70 stars located 3,540 light-years away in the constellation Ara. The best time for observation is in the evening sky between June and October. The cluster was discovered by Scottish a...
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NGC 6216
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NGC 6216 (also NGC 6222, ESO 277-SC14 and OCL 989) is a magnitude +10.1 open star cluster located 14,000 light-years away in the constellation Scorpius. The cluster was discovered by Scottish astronomer James Dunlop using a 22.86 cm (9 inch) f/12 reflecting telescope at Paramatta, New South Wales...
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