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 14:40, until soon before it sets at 02:19.
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Collinder 50 (mag 1.0) is visible in the evening sky, becoming accessible around 18:00 (PST), 64° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:21, 71° above your southern horizon. It will continue to be observable until around 01:06, 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 18:03 (PST), 76° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:42, 80° above your southern horizon. It will continue to be observable until around 00:45, when it sinks below 12° above your western horizon.
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NGC2451 (mag 2.8) is visible between 21:19 and 00:00. It will become accessible at around 21:19, when it rises to an altitude of 15° above your southern horizon. It will reach its highest point in the sky at 22:39, 17° above your southern horizon. It will become inaccessible at around 00:00 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 18:21 (PST), 20° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:34, 75° above your southern horizon. It will continue to be observable until around 05:07, when it sinks below 16° above your western horizon.
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M42 (mag 4.0) is visible in the evening sky, becoming accessible around 18:24 (PST), 40° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:30, 50° above your southern horizon. It will continue to be observable until around 00:46, when it sinks below 17° above your western horizon.
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NGC2232 (mag 4.2) is visible in the evening sky, becoming accessible around 18:24 (PST), 32° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:22, 51° above your southern horizon. It will continue to be observable until around 01:38, when it sinks below 18° above your western horizon.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 02:25 (PST) and reaching an altitude of 39° above the south-eastern horizon before fading from view as dawn breaks at around 05:44.
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Caldwell 14 (mag 4.3) will become visible at around 18:24 (PST), 64° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 00:33 when it dips 18° above your north-western horizon.
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M47 (mag 4.4) is visible between 18:51 and 02:10. It will become accessible at around 18:51, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 22:31, 41° above your southern horizon. It will become inaccessible at around 02:10 when it sinks below 18° above your south-western horizon.
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M41 (mag 4.5) is visible between 18:30 and 00:50. It will become accessible at around 18:30, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 21:40, 35° above your southern horizon. It will become inaccessible at around 00:50 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 03:03 (PST) – 3 hours and 42 minutes before the Sun – and reaching an altitude of 32° above the eastern horizon before fading from view as dawn breaks at around 05:44.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 03:17 (PST) – 3 hours and 28 minutes before the Sun – and reaching an altitude of 29° above the eastern horizon before fading from view as dawn breaks at around 05:44.
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Globular clusters
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M4 (mag 5.4) is visible in the dawn sky, rising at 02:36 (PST) and reaching an altitude of 25° above the south-eastern horizon before fading from view as dawn breaks at around 05:44.
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M5 (mag 5.7) is visible in the dawn sky, rising at 00:07 (PST) and reaching an altitude of 57° above the southern horizon before fading from view as dawn breaks at around 05:44.
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M13 (mag 5.8) is visible in the dawn sky, rising at 23:34 (PST) and reaching an altitude of 66° above the eastern horizon before fading from view as dawn breaks at around 05:44.
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M12 (mag 6.1) is visible in the dawn sky, rising at 01:46 (PST) and reaching an altitude of 44° above the south-eastern horizon before fading from view as dawn breaks at around 05:44.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 23:13, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:39, 84° above your southern horizon. It will be lost to dawn twilight around 05:44, 74° above your western horizon.
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M92 (mag 6.5) is visible in the dawn sky, rising at 23:31 (PST) and reaching an altitude of 59° above the north-eastern horizon before fading from view as dawn breaks at around 05:44.
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M10 (mag 6.6) is visible in the dawn sky, rising at 02:02 (PST) and reaching an altitude of 41° above the south-eastern horizon before fading from view as dawn breaks at around 05:44.
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Galaxies
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M31 (mag 3.4) will become visible at around 18:24 (PST), 56° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:08.
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M33 (mag 5.8) will become visible at around 18:24 (PST), 65° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:07.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 00:53, 54° above your northern horizon. At dusk, it will become visible at around 18:24 (PST), 29° above your north-eastern horizon. It will be lost to dawn twilight at around 05:44, 37° above your north-western horizon.
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M83 (mag 7.2) is visible in the morning sky, becoming accessible around 02:56, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:34, 26° above your southern horizon. It will be lost to dawn twilight around 05:44, 23° above your southern horizon.
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M101 (mag 7.9) is visible in the morning sky, becoming accessible around 22:22, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 05:00, 69° above your northern horizon. It will be lost to dawn twilight around 05:44, 68° above your northern horizon.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 21:50, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:48, 82° above your northern horizon. It will be lost to dawn twilight around 05:44, 66° above your north-western horizon.
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M51 (mag 8.4) is visible in the morning sky, becoming accessible around 22:12, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:27, 76° above your northern horizon. It will be lost to dawn twilight around 05:44, 70° above your north-western horizon.
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M104 (mag 8.6) is visible in the morning sky, becoming accessible around 00:05, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 03:37, 44° above your southern horizon. It will be lost to dawn twilight around 05:44, 35° above your south-western horizon.
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NGC2403 (mag 8.9) is visible all night. It will become visible at around 18:24 (PST), 42° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:44, 23° 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 15:10, until soon before it sets at 03:43.
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