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 02:59, until soon before it sets at 14:10.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 23:42 (CEST) and reaching an altitude of 41° above the south-eastern horizon before fading from view as dawn breaks at around 04:57.
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M45 (mag 1.3) is visible in the dawn sky, rising at 21:57 (CEST) and reaching an altitude of 52° above the south-eastern horizon before fading from view as dawn breaks at around 04:52.
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IC4665 (mag 4.2) will become visible at around 22:07 (CEST), 37° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:21.
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Caldwell 14 (mag 4.3) is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 04:12, 80° above your eastern horizon. At dusk, it will become visible at around 22:07 (CEST), 36° above your north-eastern horizon.
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NGC6633 (mag 4.6) will become visible at around 22:07 (CEST), 40° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:07.
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IC4756 (mag 4.6) will become visible at around 22:07 (CEST), 39° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:12.
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Globular clusters
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M13 (mag 5.8) will become visible at around 22:07 (CEST), 58° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 02:42 when it dips 21° above your north-western horizon.
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M12 (mag 6.1) will become visible at around 22:07 (CEST), 25° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:37.
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M3 (mag 6.3) will become visible at around 22:07 (CEST), 27° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:17.
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M15 (mag 6.3) is visible all night. It will become visible at around 22:07 (CEST), 38° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:30, 46° above your southern horizon. It will be lost to dawn twilight at around 04:12, 29° above your south-western horizon.
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M92 (mag 6.5) will become visible at around 22:07 (CEST), 68° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 04:04 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 22:07 (CEST), 26° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:34, 33° above your southern horizon. It will continue to be observable until around 03:41, when it sinks below 21° above your south-western horizon.
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M10 (mag 6.6) will become visible at around 22:07 (CEST), 24° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:34.
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Galaxies
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M31 (mag 3.4) is visible all night. It will become visible at around 22:05 (CEST), 36° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 04:13, 74° above your southern horizon.
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M33 (mag 5.8) is visible all night. It will become visible at around 22:07 (CEST), 21° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 04:12, 64° above your southern 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 22:07 (CEST), 48° above your north-western horizon. It will be lost to dawn twilight at around 04:12, 20° above your northern horizon.
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M94 (mag 8.2) will become visible at around 22:07 (CEST), 30° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 23:22 when it dips 21° above your north-western horizon.
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M51 (mag 8.4) is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 22:07 (CEST), 39° above your north-western horizon. It will be lost to dawn twilight at around 04:12, 12° above your northern 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 02:57, until soon before it sets at 16:05.
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