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 13:39, until soon before it sets at 00:50.
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Collinder 50 (mag 1.0) will become visible at around 18:30 (CET), 50° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:50.
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M45 (mag 1.3) will become visible at around 18:34 (CET), 56° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:16.
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M44 (mag 3.1) is visible in the evening sky, becoming accessible around 19:00 (CET), 38° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:19, 53° above your southern horizon. It will continue to be observable until around 04:18, when it sinks below 16° above your western horizon.
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M42 (mag 4.0) is visible in the evening sky, becoming accessible around 19:05 (CET), 28° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:14, 28° above your southern horizon. It will continue to be observable until around 22:20, when it sinks below 17° above your south-western horizon.
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NGC2232 (mag 4.2) is visible in the evening sky, becoming accessible around 19:05 (CET), 28° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:07, 29° above your southern horizon. It will continue to be observable until around 23:13, when it sinks below 18° above your south-western horizon.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 00:50 (CET) and reaching an altitude of 35° above the south-eastern horizon before fading from view as dawn breaks at around 05:37.
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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 dusk, becoming accessible at around 19:05 (CET), 64° above your western horizon. It will be lost to dawn twilight at around 05:37, 24° above your northern horizon.
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M47 (mag 4.4) is visible between 20:18 and 22:13. It will become accessible at around 20:18, when it rises to an altitude of 18° above your southern horizon. It will reach its highest point in the sky at 21:15, 19° above your southern horizon. It will become inaccessible at around 22:13 when it sinks below 18° above your southern horizon.
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NGC6633 (mag 4.6) is visible in the dawn sky, rising at 01:25 (CET) and reaching an altitude of 32° above the south-eastern horizon before fading from view as dawn breaks at around 05:37.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 01:43 (CET) and reaching an altitude of 30° above the south-eastern horizon before fading from view as dawn breaks at around 05:37.
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Globular clusters
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 01:26, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 05:00, 36° above your southern horizon. It will be lost to dawn twilight around 05:37, 35° above your southern horizon.
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M13 (mag 5.8) is visible in the dawn sky, becoming accessible around 23:20 (CET), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 69° before fading from view as dawn breaks at 05:37.
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M12 (mag 6.1) is visible in the dawn sky, rising at 00:36 (CET) and reaching an altitude of 31° above the southern horizon before fading from view as dawn breaks at around 05:37.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 21:15, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:24, 62° above your southern horizon. It will be lost to dawn twilight around 05:37, 53° above your south-western horizon.
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M92 (mag 6.5) is visible in the dawn sky, becoming accessible around 23:08 (CET), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 71° before fading from view as dawn breaks at 05:37.
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M10 (mag 6.6) is visible in the dawn sky, rising at 00:58 (CET) and reaching an altitude of 28° above the southern horizon before fading from view as dawn breaks at around 05:37.
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Galaxies
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M31 (mag 3.4) will become visible at around 19:05 (CET), 43° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 22:50 when it dips 16° above your north-western horizon.
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M33 (mag 5.8) will become visible at around 19:05 (CET), 42° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:24.
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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 03:45, 88° above your southern horizon. At dusk, it will become visible at around 19:05 (CET), 27° above your north-eastern horizon. It will be lost to dawn twilight at around 05:37, 73° above your western horizon.
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M94 (mag 8.2) is visible all night. It will become visible at around 19:05 (CET), 22° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:37, 56° above your 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 03:11, 81° above your southern horizon. At dusk, it will become visible at around 19:05 (CET), 24° above your north-eastern horizon. It will be lost to dawn twilight at around 05:37, 66° above your western horizon.
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M104 (mag 8.6) is visible between 01:35 and 03:08. It will become accessible at around 01:35, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 02:22, 22° above your southern horizon. It will become inaccessible at around 03:08 when it sinks below 21° above your southern 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 13:37, until soon before it sets at 02:45.
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