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 02:44, until soon before it sets at 14:01.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 23:43 (CEST) and reaching an altitude of 50° above the south-eastern horizon before fading from view as dawn breaks at around 05:52.
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M45 (mag 1.3) is visible in the dawn sky, rising at 22:08 (CEST) and reaching an altitude of 60° above the south-eastern horizon before fading from view as dawn breaks at around 05:48.
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M42 (mag 4.0) is visible in the dawn sky, rising at 02:47 (CEST) – 3 hours and 55 minutes before the Sun – and reaching an altitude of 19° above the south-eastern horizon before fading from view as dawn breaks at around 05:15.
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IC4665 (mag 4.2) will become visible at around 21:46 (CEST), 40° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:05.
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Caldwell 14 (mag 4.3) is visible all night because it is circumpolar. It will be highest in the sky at 05:08, 85° above your northern horizon. At dusk, it will become visible at around 21:46 (CEST), 33° above your north-eastern horizon. It will be lost to dawn twilight at around 05:15, 85° above your northern horizon.
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NGC6633 (mag 4.6) will become visible at around 21:46 (CEST), 43° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:50.
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IC4756 (mag 4.6) will become visible at around 21:46 (CEST), 42° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:56.
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Globular clusters
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M5 (mag 5.7) will become visible at around 21:46 (CEST), 21° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:19.
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M13 (mag 5.8) will become visible at around 21:46 (CEST), 60° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 06:39.
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M12 (mag 6.1) will become visible at around 21:46 (CEST), 28° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:26.
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M3 (mag 6.3) will become visible at around 21:46 (CEST), 28° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:32.
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M15 (mag 6.3) is visible in the evening sky, becoming accessible around 21:46 (CEST), 39° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:18, 49° above your southern horizon. It will continue to be observable until around 04:57, when it sinks below 21° above your western horizon.
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M92 (mag 6.5) will become visible at around 21:46 (CEST), 70° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 03:30 when it dips 21° above your north-western horizon.
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M2 (mag 6.6) is visible in the evening sky, becoming accessible around 21:46 (CEST), 27° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:22, 36° above your southern horizon. It will continue to be observable until around 03:45, when it sinks below 21° above your south-western horizon.
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M10 (mag 6.6) will become visible at around 21:46 (CEST), 27° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:25.
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Galaxies
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M31 (mag 3.4) is visible all night. It will become visible at around 21:45 (CEST), 33° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:16, 69° above your western horizon.
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M33 (mag 5.8) is visible in the morning sky, becoming accessible around 22:06, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:22, 68° above your southern horizon. It will be lost to dawn twilight around 05:15, 66° above your south-western horizon.
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M81 (mag 6.9) is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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M101 (mag 7.9) is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 21:46 (CEST), 47° above your north-western horizon. It will be lost to dawn twilight at around 05:15, 16° above your northern horizon.
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M94 (mag 8.2) will become visible at around 21:46 (CEST), 30° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 22:51 when it dips 21° above your north-western horizon.
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M51 (mag 8.4) will become visible at around 21:46 (CEST), 39° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 00:15 when it dips 21° above your north-western horizon.
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NGC2403 (mag 8.9) is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 02:49, until soon before it sets at 15:49.
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