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 11:13, until soon before it sets at 22:52.
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Collinder 50 (mag 1.0) will become visible at around 19:56 (PDT), 33° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 22 minutes after the Sun at 22:42.
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M45 (mag 1.3) will become visible at around 19:59 (PDT), 28° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 8 minutes after the Sun at 22:28.
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NGC2451 (mag 2.8) will become visible at around 20:14 (PDT), 16° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 49 minutes after the Sun at 23:09.
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M44 (mag 3.1) will become visible at around 20:17 (PDT), 75° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:06.
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M7 (mag 3.3) is visible in the morning sky, becoming accessible around 03:34, when it reaches an altitude of 16° above your south-eastern horizon. It will then reach its highest point in the sky at 05:23, 21° above your southern horizon. It will be lost to dawn twilight around 05:23, 21° above your southern horizon.
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M42 (mag 4.0) will become visible at around 20:22 (PDT), 28° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 30 minutes after the Sun at 22:50.
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M6 (mag 4.2) is visible in the morning sky, becoming accessible around 03:14, when it reaches an altitude of 18° above your south-eastern horizon. It will then reach its highest point in the sky at 05:09, 23° above your southern horizon. It will be lost to dawn twilight around 05:21, 23° above your southern horizon.
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NGC2232 (mag 4.2) will become visible at around 20:22 (PDT), 37° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:44.
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IC4665 (mag 4.2) is visible in the morning sky, becoming accessible around 00:29, when it reaches an altitude of 18° above your eastern horizon. It will then reach its highest point in the sky at 05:15, 61° above your southern horizon. It will be lost to dawn twilight around 05:21, 61° above your southern horizon.
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Caldwell 14 (mag 4.3) will become visible at around 20:22 (PDT), 23° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 21:06 when it dips 18° above your north-western horizon.
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M47 (mag 4.4) will become visible at around 20:22 (PDT), 37° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:26.
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M41 (mag 4.5) will become visible at around 20:22 (PDT), 27° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 56 minutes after the Sun at 23:16.
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NGC6633 (mag 4.6) is visible in the dawn sky, rising at 23:36 (PDT) and reaching an altitude of 61° above the southern 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 23:50 (PDT) and reaching an altitude of 59° 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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M22 (mag 5.2) is visible in the dawn sky, rising at 01:12 (PDT) and reaching an altitude of 31° above the southern horizon before fading from view as dawn breaks at around 05:21.
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M4 (mag 5.4) is visible in the morning sky, becoming accessible around 01:32, when it reaches an altitude of 20° above your south-eastern horizon. It will then reach its highest point in the sky at 03:53, 29° above your southern horizon. It will be lost to dawn twilight around 05:21, 25° above your southern horizon.
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 22:26, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:48, 58° above your southern horizon. It will be lost to dawn twilight around 05:21, 41° above your south-western horizon.
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M13 (mag 5.8) is visible in the morning sky, becoming accessible around 22:23, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:11, 87° above your northern horizon. It will be lost to dawn twilight around 05:21, 75° above your western horizon.
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M12 (mag 6.1) is visible in the morning sky, becoming accessible around 00:10, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:16, 54° above your southern horizon. It will be lost to dawn twilight around 05:21, 50° above your south-western horizon.
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M3 (mag 6.3) is visible all night. It will become visible at around 20:22 (PDT), 29° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:12, 84° above your southern horizon. It will be lost to dawn twilight at around 05:21, 37° above your western horizon.
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M15 (mag 6.3) is visible in the dawn sky, rising at 02:22 (PDT) and reaching an altitude of 36° above the eastern horizon before fading from view as dawn breaks at around 05:21.
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M62 (mag 6.4) is visible in the morning sky, becoming accessible around 02:55, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:30, 25° above your southern horizon. It will be lost to dawn twilight around 05:21, 24° above your southern horizon.
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M92 (mag 6.5) is visible in the morning sky, becoming accessible around 22:43, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:46, 80° above your northern horizon. It will be lost to dawn twilight around 05:21, 78° above your north-western horizon.
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M2 (mag 6.6) is visible in the dawn sky, rising at 03:01 (PDT) – 3 hours and 21 minutes before the Sun – and reaching an altitude of 27° above the eastern horizon before fading from view as dawn breaks at around 05:21.
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M10 (mag 6.6) is visible in the morning sky, becoming accessible around 00:27, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:26, 51° above your southern horizon. It will be lost to dawn twilight around 05:21, 49° above your southern horizon.
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Galaxies
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 21:22, 54° above your northern horizon. At dusk, it will become visible at around 20:22 (PDT), 53° above your northern horizon. It will be lost to dawn twilight at around 05:21, 22° above your northern horizon.
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M83 (mag 7.2) is visible between 23:28 and 02:45. It will become accessible at around 23:28, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 01:07, 26° above your southern horizon. It will become inaccessible at around 02:45 when it sinks below 21° above your southern horizon.
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M101 (mag 7.9) is visible all night. It will become visible at around 20:22 (PDT), 34° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:33, 69° above your northern horizon. It will be lost to dawn twilight at around 05:21, 45° above your north-western horizon.
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M94 (mag 8.2) is visible all night. It will become visible at around 20:22 (PDT), 43° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:21, 82° above your northern horizon. It will be lost to dawn twilight at around 05:21, 31° above your north-western horizon.
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M51 (mag 8.4) is visible all night. It will become visible at around 20:22 (PDT), 37° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:59, 76° above your northern horizon. It will be lost to dawn twilight at around 05:21, 40° above your north-western horizon.
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M104 (mag 8.6) is visible between 20:37 and 03:42. It will become accessible at around 20:37, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:10, 44° above your southern horizon. It will become inaccessible at around 03:42 when it sinks below 21° above your south-western horizon.
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NGC2403 (mag 8.9) will become visible at around 20:22 (PDT), 56° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 02:37 when it dips 21° above your north-western horizon.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 11:43, until soon before it sets at 00:15.
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M8 (mag 5.8) is visible in the dawn sky, rising at 00:41 (PDT) and reaching an altitude of 31° above the southern horizon before fading from view as dawn breaks at around 05:21.
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