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 10:17, until soon before it sets at 21:57.
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Collinder 50 (mag 1.0) will become visible at around 20:08 (PDT), 19° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 2 hours and 16 minutes after the Sun at 21:47.
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M45 (mag 1.3) will become visible at around 20:11 (PDT), 14° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 2 hours and 2 minutes after the Sun at 21:33.
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M44 (mag 3.1) will become visible at around 20:30 (PDT), 67° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:11.
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M7 (mag 3.3) is visible in the morning sky, becoming accessible around 02:39, when it reaches an altitude of 16° above your south-eastern horizon. It will then reach its highest point in the sky at 04:28, 21° above your southern horizon. It will be lost to dawn twilight around 05:04, 20° above your southern horizon.
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M6 (mag 4.2) is visible in the morning sky, becoming accessible around 02:19, when it reaches an altitude of 18° above your south-eastern horizon. It will then reach its highest point in the sky at 04:14, 23° above your southern horizon. It will be lost to dawn twilight around 05:02, 22° above your southern horizon.
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NGC2232 (mag 4.2) will become visible at around 20:35 (PDT), 26° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 18 minutes after the Sun at 22:49.
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IC4665 (mag 4.2) is visible in the morning sky, becoming accessible around 23:34, when it reaches an altitude of 18° above your eastern horizon. It will then reach its highest point in the sky at 04:20, 61° above your southern horizon. It will be lost to dawn twilight around 05:02, 59° above your southern horizon.
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M47 (mag 4.4) will become visible at around 20:35 (PDT), 30° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:31.
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NGC6633 (mag 4.6) is visible in the morning sky, becoming accessible around 00:16, when it reaches an altitude of 19° above your eastern horizon. It will then reach its highest point in the sky at 05:01, 62° above your southern horizon. It will be lost to dawn twilight around 05:02, 62° above your southern horizon.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 22:55 (PDT) and reaching an altitude of 61° above the southern horizon before fading from view as dawn breaks at around 05:02.
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Globular clusters
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M22 (mag 5.2) is visible in the dawn sky, rising at 00:17 (PDT) and reaching an altitude of 32° above the southern horizon before fading from view as dawn breaks at around 05:02.
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M4 (mag 5.4) is visible in the morning sky, becoming accessible around 00:36, when it reaches an altitude of 20° above your south-eastern horizon. It will then reach its highest point in the sky at 02:58, 29° above your southern horizon. It will be lost to dawn twilight around 05:02, 22° above your south-western horizon.
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 21:31, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 01:53, 58° above your southern horizon. It will be lost to dawn twilight around 05:02, 35° above your south-western horizon.
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M13 (mag 5.8) is visible in the morning sky, becoming accessible around 21:28, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:16, 87° above your northern horizon. It will be lost to dawn twilight around 05:02, 68° above your western horizon.
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M12 (mag 6.1) is visible in the morning sky, becoming accessible around 23:15, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:21, 54° above your southern horizon. It will be lost to dawn twilight around 05:02, 46° above your south-western horizon.
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M3 (mag 6.3) is visible all night. It will become visible at around 20:35 (PDT), 43° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:17, 84° above your southern horizon. It will be lost to dawn twilight at around 05:02, 29° above your western horizon.
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M15 (mag 6.3) is visible in the dawn sky, rising at 01:27 (PDT) and reaching an altitude of 43° above the eastern horizon before fading from view as dawn breaks at around 05:02.
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M55 (mag 6.3) is visible in the dawn sky, rising at 01:46 (PDT) and reaching an altitude of 22° above the southern horizon before fading from view as dawn breaks at around 05:02.
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M62 (mag 6.4) is visible in the morning sky, becoming accessible around 02:00, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 03:35, 25° above your southern horizon. It will be lost to dawn twilight around 05:02, 22° above your southern horizon.
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M92 (mag 6.5) is visible in the morning sky, becoming accessible around 21:48, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:51, 80° above your northern horizon. It will be lost to dawn twilight around 05:02, 73° above your north-western horizon.
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M2 (mag 6.6) is visible in the dawn sky, rising at 02:06 (PDT) – 3 hours and 59 minutes before the Sun – and reaching an altitude of 34° above the south-eastern horizon before fading from view as dawn breaks at around 05:02.
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M10 (mag 6.6) is visible in the morning sky, becoming accessible around 23:32, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:31, 51° above your southern horizon. It will be lost to dawn twilight around 05:02, 46° above your south-western horizon.
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Galaxies
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M31 (mag 3.4) is visible in the dawn sky, rising at 02:45 (PDT) – 3 hours and 20 minutes before the Sun – and reaching an altitude of 19° above the north-eastern horizon before fading from view as dawn breaks at around 05:03.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 20:35 (PDT), 54° above your northern horizon. It will be lost to dawn twilight at around 05:02, 19° above your northern horizon.
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M83 (mag 7.2) is visible between 22:33 and 01:50. It will become accessible at around 22:33, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:11, 26° above your southern horizon. It will become inaccessible at around 01:50 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 20:35 (PDT), 44° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:38, 69° above your northern horizon. It will be lost to dawn twilight at around 05:02, 40° above your north-western horizon.
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M94 (mag 8.2) is visible all night. It will become visible at around 20:35 (PDT), 56° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:22, 82° above your northern horizon. It will be lost to dawn twilight at around 05:02, 25° above your north-western horizon.
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M51 (mag 8.4) is visible all night. It will become visible at around 20:35 (PDT), 49° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:04, 76° above your northern horizon. It will be lost to dawn twilight at around 05:02, 34° above your north-western horizon.
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M104 (mag 8.6) is visible in the evening sky, becoming accessible around 20:35 (PDT), 31° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:11, 44° above your southern horizon. It will continue to be observable until around 02:43, when it sinks below 21° above your south-western horizon.
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NGC2403 (mag 8.9) will become visible at around 20:35 (PDT), 51° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 01:42 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 10:48, until soon before it sets at 23:20.
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M8 (mag 5.8) is visible in the morning sky, becoming accessible around 02:08, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:37, 31° above your southern horizon. It will be lost to dawn twilight around 05:02, 31° above your southern horizon.
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