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 12:48, until soon before it sets at 00:05.
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Collinder 50 (mag 1.0) will become visible at around 19:27 (CET), 45° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:50.
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M45 (mag 1.3) will become visible at around 19:31 (CET), 46° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:06.
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M44 (mag 3.1) is visible in the evening sky, becoming accessible around 19:55 (CET), 52° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:32, 57° above your southern horizon. It will continue to be observable until around 03:27, when it sinks below 16° above your western horizon.
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M42 (mag 4.0) will become visible at around 20:00 (CET), 28° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:03.
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NGC2232 (mag 4.2) will become visible at around 20:00 (CET), 32° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:58.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 00:07 (CET) and reaching an altitude of 40° above the south-eastern horizon before fading from view as dawn breaks at around 05:21.
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Caldwell 14 (mag 4.3) is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 20:00 (CET), 50° above your north-western horizon. It will be lost to dawn twilight at around 05:21, 22° above your northern horizon.
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M47 (mag 4.4) is visible in the evening sky, becoming accessible around 20:00 (CET), 22° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:28, 23° above your southern horizon. It will continue to be observable until around 22:21, when it sinks below 18° above your south-western horizon.
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NGC6633 (mag 4.6) is visible in the dawn sky, rising at 00:43 (CET) and reaching an altitude of 37° above the south-eastern horizon before fading from view as dawn breaks at around 05:21.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 01:00 (CET) and reaching an altitude of 35° above the south-eastern horizon before fading from view as dawn breaks at around 05:21.
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Globular clusters
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 00:26, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:13, 39° above your southern horizon. It will be lost to dawn twilight around 05:21, 37° above your southern horizon.
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M13 (mag 5.8) is visible in the dawn sky, rising at 18:23 (CET) and reaching an altitude of 73° above the southern horizon before fading from view as dawn breaks at around 05:21.
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M12 (mag 6.1) is visible in the dawn sky, rising at 23:47 (CET) and reaching an altitude of 35° above the southern horizon before fading from view as dawn breaks at around 05:21.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 20:36, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:36, 66° above your southern horizon. It will be lost to dawn twilight around 05:21, 51° above your south-western horizon.
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M92 (mag 6.5) is visible in the dawn sky, becoming accessible around 22:43 (CET), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 77° before fading from view as dawn breaks at 05:21.
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M10 (mag 6.6) is visible in the dawn sky, rising at 00:08 (CET) and reaching an altitude of 33° above the southern horizon before fading from view as dawn breaks at around 05:21.
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Galaxies
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M31 (mag 3.4) will become visible at around 20:00 (CET), 28° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 21:37 when it dips 16° above your north-western horizon.
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M33 (mag 5.8) will become visible at around 20:00 (CET), 27° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:54.
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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 02:57, 88° above your northern horizon. At dusk, it will become visible at around 20:00 (CET), 34° above your north-eastern horizon. It will be lost to dawn twilight at around 05:21, 68° above your western horizon.
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M94 (mag 8.2) is visible all night. It will become visible at around 20:00 (CET), 33° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:21, 52° above your western horizon.
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M51 (mag 8.4) is visible all night. It will become visible at around 20:00 (CET), 32° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:21, 61° above your western horizon.
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M104 (mag 8.6) is visible between 23:47 and 03:21. It will become accessible at around 23:47, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 01:34, 26° above your southern horizon. It will become inaccessible at around 03:21 when it sinks below 21° above your south-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 12:54, until soon before it sets at 01:54.
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