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 12:45, until soon before it sets at 00:25.
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Collinder 50 (mag 1.0) will become visible at around 19:32 (PDT), 57° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:12.
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M45 (mag 1.3) will become visible at around 19:35 (PDT), 52° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:57.
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NGC2451 (mag 2.8) is visible in the evening sky, becoming accessible around 19:50 (PDT), 18° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:45, 19° above your southern horizon. It will continue to be observable until around 22:24, when it sinks below 15° above your southern horizon.
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M44 (mag 3.1) is visible in the evening sky, becoming accessible around 19:52 (PDT), 62° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:40, 76° above your southern horizon. It will continue to be observable until around 03:11, when it sinks below 16° above your western horizon.
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M7 (mag 3.3) is visible in the dawn sky, rising at 02:38 (PDT) and reaching an altitude of 21° above the southern horizon before fading from view as dawn breaks at around 05:56.
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M42 (mag 4.0) will become visible at around 19:56 (PDT), 47° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:24.
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M6 (mag 4.2) is visible in the dawn sky, rising at 02:14 (PDT) and reaching an altitude of 24° above the southern horizon before fading from view as dawn breaks at around 05:54.
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NGC2232 (mag 4.2) will become visible at around 19:56 (PDT), 51° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:18.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 00:31 (PDT) and reaching an altitude of 60° above the south-eastern horizon before fading from view as dawn breaks at around 05:54.
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Caldwell 14 (mag 4.3) will become visible at around 19:56 (PDT), 38° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at --:--.
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M47 (mag 4.4) is visible in the evening sky, becoming accessible around 19:56 (PDT), 41° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:36, 42° above your southern horizon. It will continue to be observable until around 00:19, when it sinks below 18° above your south-western horizon.
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M41 (mag 4.5) will become visible at around 19:56 (PDT), 36° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:52.
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NGC6633 (mag 4.6) is visible in the dawn sky, rising at 01:09 (PDT) and reaching an altitude of 55° above the south-eastern horizon before fading from view as dawn breaks at around 05:54.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 01:24 (PDT) and reaching an altitude of 53° above the south-eastern horizon before fading from view as dawn breaks at around 05:54.
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Globular clusters
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M22 (mag 5.2) is visible in the dawn sky, rising at 02:41 (PDT) and reaching an altitude of 28° above the south-eastern horizon before fading from view as dawn breaks at around 05:54.
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M4 (mag 5.4) is visible in the morning sky, becoming accessible around 02:55, when it reaches an altitude of 20° above your south-eastern horizon. It will then reach its highest point in the sky at 05:25, 30° above your southern horizon. It will be lost to dawn twilight around 05:54, 30° above your southern horizon.
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 23:58, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:21, 59° above your southern horizon. It will be lost to dawn twilight around 05:54, 52° above your south-western horizon.
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M13 (mag 5.8) is visible in the morning sky, becoming accessible around 23:59, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 05:44, 86° above your northern horizon. It will be lost to dawn twilight around 05:54, 85° above your north-western horizon.
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M12 (mag 6.1) is visible in the morning sky, becoming accessible around 01:41, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 05:49, 55° above your southern horizon. It will be lost to dawn twilight around 05:54, 55° above your southern horizon.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 21:21, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:45, 85° above your southern horizon. It will be lost to dawn twilight around 05:54, 49° above your western horizon.
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M15 (mag 6.3) is visible in the dawn sky, rising at 03:56 (PDT) – 2 hours and 56 minutes before the Sun – and reaching an altitude of 23° above the eastern horizon before fading from view as dawn breaks at around 05:54.
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M62 (mag 6.4) is visible in the dawn sky, rising at 01:27 (PDT) and reaching an altitude of 27° above the southern horizon before fading from view as dawn breaks at around 05:54.
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M92 (mag 6.5) is visible in the dawn sky, rising at 21:46 (PDT) and reaching an altitude of 78° above the north-eastern horizon before fading from view as dawn breaks at around 05:54.
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M10 (mag 6.6) is visible in the dawn sky, rising at 00:07 (PDT) and reaching an altitude of 53° above the southern horizon before fading from view as dawn breaks at around 05:54.
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Galaxies
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M31 (mag 3.4) will become visible at around 19:56 (PDT), 18° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 7 minutes after the Sun at 22:05.
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M33 (mag 5.8) will become visible at around 19:56 (PDT), 23° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 9 minutes after the Sun at 22:07.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 22:55, 53° above your northern horizon. At dusk, it will become visible at around 19:56 (PDT), 45° above your northern horizon. It will be lost to dawn twilight at around 05:54, 25° above your north-western horizon.
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M83 (mag 7.2) is visible between 00:47 and 04:32. It will become accessible at around 00:47, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 02:39, 27° above your southern horizon. It will become inaccessible at around 04:32 when it sinks below 21° above your south-western horizon.
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M101 (mag 7.9) is visible in the morning sky, becoming accessible around 20:35, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:05, 68° above your northern horizon. It will be lost to dawn twilight around 05:54, 53° above your north-western horizon.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 20:00, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 01:53, 81° above your northern horizon. It will be lost to dawn twilight around 05:54, 42° above your north-western horizon.
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M51 (mag 8.4) is visible in the morning sky, becoming accessible around 20:23, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 02:32, 75° above your northern horizon. It will be lost to dawn twilight around 05:54, 49° above your north-western horizon.
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M104 (mag 8.6) is visible between 22:06 and 05:19. It will become accessible at around 22:06, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 01:43, 45° above your southern horizon. It will become inaccessible at around 05:19 when it sinks below 21° above your south-western horizon.
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NGC2403 (mag 8.9) is visible all night. It will become visible at around 19:56 (PDT), 56° above your northern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:36, 57° above your northern horizon. It will continue to be observable until around 03:55, when it sinks below 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 13:16, until soon before it sets at 01:48.
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M8 (mag 5.8) is visible in the dawn sky, rising at 02:10 (PDT) and reaching an altitude of 30° above the southern horizon before fading from view as dawn breaks at around 05:54.
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