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 18:30, until soon before it sets at 05:41.
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Collinder 50 (mag 1.0) is visible between 16:45 and 05:01. It will become accessible at around 16:45, when it rises to an altitude of 11° above your eastern horizon. It will reach its highest point in the sky at 22:53, 50° above your southern horizon. It will become inaccessible at around 05:01 when it sinks below 11° above your western horizon.
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M45 (mag 1.3) is visible in the evening sky, becoming accessible around 16:44 (CET), 23° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:14, 58° above your southern horizon. It will continue to be observable until around 05:07, when it sinks below 12° above your north-western horizon.
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M44 (mag 3.1) is visible in the morning sky, becoming accessible around 21:10, when it reaches an altitude of 16° above your eastern horizon. It will then reach its highest point in the sky at 03:10, 53° above your southern horizon. It will be lost to dawn twilight around 06:54, 34° above your western horizon.
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M42 (mag 4.0) is visible between 20:59 and 03:11. It will become accessible at around 20:59, when it rises to an altitude of 17° above your south-eastern horizon. It will reach its highest point in the sky at 00:05, 28° above your southern horizon. It will become inaccessible at around 03:11 when it sinks below 17° above your south-western horizon.
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NGC2232 (mag 4.2) is visible between 21:51 and 04:04. It will become accessible at around 21:51, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 00:58, 29° above your southern horizon. It will become inaccessible at around 04:04 when it sinks below 18° above your south-western horizon.
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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 20:46, 88° above your northern horizon. At dusk, it will become visible at around 17:19 (CET), 61° above your north-eastern horizon. It will be lost to dawn twilight at around 06:48, 25° above your northern horizon.
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M47 (mag 4.4) is visible between 01:08 and 03:04. It will become accessible at around 01:08, when it rises to an altitude of 18° above your southern horizon. It will reach its highest point in the sky at 02:06, 19° above your southern horizon. It will become inaccessible at around 03:04 when it sinks below 18° above your southern horizon.
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IC4756 (mag 4.6) will become visible at around 17:19 (CET), 19° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 19:43.
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Globular clusters
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M5 (mag 5.7) is visible in the dawn sky, rising at 03:31 (CET) and reaching an altitude of 25° above the south-eastern horizon before fading from view as dawn breaks at around 06:48.
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M13 (mag 5.8) is visible in both the dusk and dawn skies. In the evening, it will become visible at around 17:19 (CET), 28° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 18:12 when it dips 21° above your north-western horizon. At 04:07, it will return to an altitude of 21° above your north-eastern horizon, and reach an altitude of 42° before fading from view as dawn breaks at around 06:48.
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M3 (mag 6.3) is visible in the dawn sky, rising at 22:34 (CET) and reaching an altitude of 58° above the south-eastern horizon before fading from view as dawn breaks at around 06:48.
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M15 (mag 6.3) will become visible at around 17:19 (CET), 43° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:15.
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M92 (mag 6.5) is visible in both the dusk and dawn skies. In the evening, it will become visible at around 17:19 (CET), 37° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 19:35 when it dips 21° above your north-western horizon. At 03:55, it will return to an altitude of 21° above your north-eastern horizon, and reach an altitude of 42° before fading from view as dawn breaks at around 06:48.
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M2 (mag 6.6) will become visible at around 17:19 (CET), 31° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 22:00.
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Galaxies
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M31 (mag 3.4) is visible all night. It will become visible at around 17:18 (CET), 66° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:09, 75° above your southern horizon. It will continue to be observable until around 03:37, when it sinks below 16° above your north-western horizon.
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M33 (mag 5.8) is visible in the evening sky, becoming accessible around 17:19 (CET), 52° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:00, 64° above your southern horizon. It will continue to be observable until around 02:26, when it sinks below 21° above your north-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 shortly before dawn, when it will be lost to twilight at around 06:48, 75° above your eastern horizon. At dusk, it will become visible at around 17:19 (CET), 26° above your north-western horizon.
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M94 (mag 8.2) is visible in the dawn sky, becoming accessible around 23:46 (CET), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 74° before fading from view as dawn breaks at 06:48.
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M51 (mag 8.4) 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 06:48, 76° above your south-eastern horizon. At dusk, it will become visible at around 17:19 (CET), 18° above your north-western horizon.
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M104 (mag 8.6) is visible in the dawn sky, rising at 02:14 (CET) and reaching an altitude of 22° above the southern horizon before fading from view as dawn breaks at around 06:48.
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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 18:28, until soon before it sets at 07:36.
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