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 16:59, until soon before it sets at 04:10.
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Collinder 50 (mag 1.0) is visible in the evening sky, becoming accessible around 16:56 (CET), 25° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:27, 50° above your southern horizon. It will continue to be observable until around 03:35, 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 17:01 (CET), 38° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:47, 58° above your southern horizon. It will continue to be observable until around 03:41, 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 19:44, when it reaches an altitude of 16° above your eastern horizon. It will then reach its highest point in the sky at 01:43, 53° above your southern horizon. It will be lost to dawn twilight around 06:59, 22° above your western horizon.
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M42 (mag 4.0) is visible between 19:29 and 01:41. It will become accessible at around 19:29, when it rises to an altitude of 17° above your south-eastern horizon. It will reach its highest point in the sky at 22:35, 28° above your southern horizon. It will become inaccessible at around 01:41 when it sinks below 17° above your south-western horizon.
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NGC2232 (mag 4.2) is visible between 20:21 and 02:34. It will become accessible at around 20:21, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 23:27, 29° above your southern horizon. It will become inaccessible at around 02:34 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 04:10 (CET) and reaching an altitude of 21° above the south-eastern horizon before fading from view as dawn breaks at around 06:53.
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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 19:20, 88° above your northern horizon. At dusk, it will become visible at around 17:36 (CET), 75° above your eastern horizon. It will be lost to dawn twilight at around 06:53, 22° above your northern horizon.
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M47 (mag 4.4) is visible between 23:42 and 01:37. It will become accessible at around 23:42, when it rises to an altitude of 18° above your southern horizon. It will reach its highest point in the sky at 00:40, 19° above your southern horizon. It will become inaccessible at around 01:37 when it sinks below 18° above your southern horizon.
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Globular clusters
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M5 (mag 5.7) is visible in the dawn sky, rising at 02:04 (CET) and reaching an altitude of 33° above the south-eastern horizon before fading from view as dawn breaks at around 06:53.
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M13 (mag 5.8) is visible in the dawn sky, becoming accessible around 02:40 (CET), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 55° before fading from view as dawn breaks at 06:53.
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M12 (mag 6.1) is visible in the dawn sky, rising at 03:56 (CET) and reaching an altitude of 22° above the south-eastern horizon before fading from view as dawn breaks at around 06:53.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 00:36, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 06:44, 62° above your southern horizon. It will be lost to dawn twilight around 06:53, 62° above your southern horizon.
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M15 (mag 6.3) will become visible at around 17:36 (CET), 33° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 21:49.
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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 17:36 (CET), 25° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 18:09 when it dips 21° above your north-western horizon. At 02:28, it will return to an altitude of 21° above your north-eastern horizon, and reach an altitude of 55° before fading from view as dawn breaks at around 06:53.
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M2 (mag 6.6) will become visible at around 17:36 (CET), 22° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 20:33.
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Galaxies
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M31 (mag 3.4) is visible all night. It will become visible at around 17:35 (CET), 75° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 17:43, 75° above your southern horizon. It will continue to be observable until around 02:10, 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 17:36 (CET), 62° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:34, 64° above your southern horizon. It will continue to be observable until around 00:59, 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 06:53, 87° above your south-eastern horizon. At dusk, it will become visible at around 17:36 (CET), 21° above your northern horizon.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 22:20, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 05:53, 75° above your southern horizon. It will be lost to dawn twilight at around 06:53, 72° above your south-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 06:32, 81° above your southern horizon. At dusk, it will become visible at around 17:36 (CET), 13° above your northern horizon. It will be lost to dawn twilight at around 06:53, 80° above your southern horizon.
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M104 (mag 8.6) is visible between 04:56 and 06:29. It will become accessible at around 04:56, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 05:42, 22° above your southern horizon. It will become inaccessible at around 06:29 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 16:58, until soon before it sets at 06:05.
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