Objects in your sky: Deep Sky
by Dominic Ford
Open clusters
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NGC1977 (mag 0.0) is visible from soon after it rises, at 04:51, until soon before it sets at 16:34.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 02:53 (EDT) – 3 hours and 45 minutes before the Sun – and reaching an altitude of 39° above the eastern horizon before fading from view as dawn breaks at around 06:02.
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M45 (mag 1.3) is visible in the dawn sky, rising at 01:51 (EDT) and reaching an altitude of 50° above the eastern horizon before fading from view as dawn breaks at around 05:58.
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M7 (mag 3.3) is visible in the evening sky, becoming accessible around 21:25 (EDT), 21° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:59, 24° above your southern horizon. It will continue to be observable until around 01:23, when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible in the evening sky, becoming accessible around 21:27 (EDT), 24° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:45, 27° above your southern horizon. It will continue to be observable until around 01:12, when it sinks below 18° above your south-western horizon.
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IC4665 (mag 4.2) is visible in the evening sky, becoming accessible around 21:27 (EDT), 58° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:51, 65° above your southern horizon. It will continue to be observable until around 03:39, when it sinks below 18° above your western horizon.
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Caldwell 14 (mag 4.3) is visible in the dawn sky, rising at 20:56 (EDT) and reaching an altitude of 56° above the north-eastern horizon before fading from view as dawn breaks at around 05:35.
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NGC6633 (mag 4.6) is visible in the evening sky, becoming accessible around 21:27 (EDT), 52° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:32, 66° above your southern horizon. It will continue to be observable until around 04:18, when it sinks below 19° above your western horizon.
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IC4756 (mag 4.6) is visible in the evening sky, becoming accessible around 21:27 (EDT), 49° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:44, 65° above your southern horizon. It will continue to be observable until around 04:27, when it sinks below 19° above your western horizon.
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Globular clusters
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M22 (mag 5.2) is visible in the evening sky, becoming accessible around 21:27 (EDT), 26° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:41, 35° above your southern horizon. It will continue to be observable until around 02:43, when it sinks below 20° above your south-western horizon.
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M4 (mag 5.4) is visible in the evening sky, becoming accessible around 21:27 (EDT), 33° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:29, 33° above your southern horizon. It will continue to be observable until around 00:14, when it sinks below 20° above your south-western horizon.
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M5 (mag 5.7) will become visible at around 21:27 (EDT), 57° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:31.
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M13 (mag 5.8) is visible in the evening sky, becoming accessible around 21:27 (EDT), 82° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:47, 83° above your northern horizon. It will continue to be observable until around 03:24, when it sinks below 21° above your north-western horizon.
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M12 (mag 6.1) is visible in the evening sky, becoming accessible around 21:27 (EDT), 57° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:52, 57° above your southern horizon. It will continue to be observable until around 02:04, when it sinks below 21° above your western horizon.
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M3 (mag 6.3) will become visible at around 21:27 (EDT), 55° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:05.
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M15 (mag 6.3) is visible in the morning sky, becoming accessible around 21:52, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:38, 71° above your southern horizon. It will be lost to dawn twilight around 05:35, 45° above your western horizon.
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M55 (mag 6.3) is visible between 22:45 and 02:53. It will become accessible at around 22:45, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:49, 28° above your southern horizon. It will become inaccessible at around 02:53 when it sinks below 21° above your south-western horizon.
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M62 (mag 6.4) is visible in the evening sky, becoming accessible around 21:27 (EDT), 28° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:06, 29° above your southern horizon. It will continue to be observable until around 00:17, when it sinks below 21° above your south-western horizon.
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M92 (mag 6.5) is visible in the evening sky, becoming accessible around 21:27 (EDT), 73° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:22, 77° above your northern horizon. It will continue to be observable until around 04:12, when it sinks below 21° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 22:27, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:42, 58° above your southern horizon. It will be lost to dawn twilight around 05:35, 38° above your south-western horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 21:27 (EDT), 54° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:02, 55° above your southern horizon. It will continue to be observable until around 02:08, when it sinks below 21° above your western horizon.
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Galaxies
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M31 (mag 3.4) is visible in the dawn sky, rising at 21:43 (EDT) and reaching an altitude of 78° above the northern horizon before fading from view as dawn breaks at around 05:35.
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M33 (mag 5.8) is visible in the dawn sky, rising at 23:17 (EDT) and reaching an altitude of 75° above the eastern horizon before fading from view as dawn breaks at around 05:35.
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M81 (mag 6.9) will become visible at around 21:27 (EDT), 25° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 22:15 when it dips 21° above your northern horizon.
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NGC253 (mag 7.1) is visible in the dawn sky, rising at 00:56 (EDT) and reaching an altitude of 34° above the southern horizon before fading from view as dawn breaks at around 05:35.
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M101 (mag 7.9) will become visible at around 21:27 (EDT), 55° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:55.
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M94 (mag 8.2) will become visible at around 21:27 (EDT), 46° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:04.
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M51 (mag 8.4) will become visible at around 21:27 (EDT), 53° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:17.
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M104 (mag 8.6) will become visible at around 21:27 (EDT), 22° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 2 hours and 57 minutes after the Sun at 23:21.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 05:25, until soon before it sets at 17:54. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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M8 (mag 5.8) is visible in the evening sky, becoming accessible around 21:27 (EDT), 30° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:09, 35° above your southern horizon. It will continue to be observable until around 02:00, when it sinks below 21° above your south-western horizon.
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