Objects in your sky: Deep Sky
by Dominic Ford
Open clusters
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NGC1977 (mag 0.0) is visible in the dawn sky, rising at 03:00 (PDT) – 3 hours and 11 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks at around 05:07.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 00:54 (PDT) and reaching an altitude of 56° above the south-eastern horizon before fading from view as dawn breaks at around 05:34.
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M45 (mag 1.3) is visible in the dawn sky, rising at 23:49 (PDT) and reaching an altitude of 67° above the eastern horizon before fading from view as dawn breaks at around 05:30.
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M7 (mag 3.3) is visible in the evening sky, becoming accessible around 20:39 (PDT), 20° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:06, 21° above your southern horizon. It will continue to be observable until around 22:55, when it sinks below 16° above your south-western horizon.
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M42 (mag 4.0) is visible in the dawn sky, rising at 03:02 (PDT) – 3 hours and 9 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks at around 05:07.
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M6 (mag 4.2) is visible in the evening sky, becoming accessible around 20:42 (PDT), 23° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:53, 23° above your southern horizon. It will continue to be observable until around 22:48, when it sinks below 18° above your south-western horizon.
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IC4665 (mag 4.2) is visible in the evening sky, becoming accessible around 20:42 (PDT), 61° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:59, 61° above your southern horizon. It will continue to be observable until around 01:45, when it sinks below 18° above your western horizon.
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Caldwell 14 (mag 4.3) is visible in the dawn sky, becoming accessible around 22:16 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 66° before fading from view as dawn breaks at 05:07.
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NGC6633 (mag 4.6) is visible in the evening sky, becoming accessible around 20:42 (PDT), 59° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:40, 62° above your southern horizon. It will continue to be observable until around 02:24, when it sinks below 19° above your western horizon.
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IC4756 (mag 4.6) is visible in the evening sky, becoming accessible around 20:42 (PDT), 57° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:51, 61° above your southern horizon. It will continue to be observable until around 02:33, when it sinks below 19° above your western horizon.
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Globular clusters
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M22 (mag 5.2) is visible in the evening sky, becoming accessible around 20:42 (PDT), 29° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:49, 32° above your southern horizon. It will continue to be observable until around 00:31, when it sinks below 20° above your south-western horizon.
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M4 (mag 5.4) will become visible at around 20:42 (PDT), 27° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:21.
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M5 (mag 5.7) will become visible at around 20:42 (PDT), 45° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:40.
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M13 (mag 5.8) will become visible at around 20:42 (PDT), 80° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:58.
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M12 (mag 6.1) will become visible at around 20:42 (PDT), 52° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:57.
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M3 (mag 6.3) will become visible at around 20:42 (PDT), 41° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:24.
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M15 (mag 6.3) is visible all night. It will become visible at around 20:42 (PDT), 31° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:46, 68° above your southern horizon. It will be lost to dawn twilight at around 05:07, 27° above your western horizon.
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M55 (mag 6.3) is visible between 21:28 and 00:17. It will become accessible at around 21:28, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 22:52, 24° above your southern horizon. It will become inaccessible at around 00:17 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) will become visible at around 20:42 (PDT), 25° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:45.
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M92 (mag 6.5) will become visible at around 20:42 (PDT), 80° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 05:12.
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M2 (mag 6.6) is visible in the evening sky, becoming accessible around 20:42 (PDT), 23° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:49, 55° above your southern horizon. It will continue to be observable until around 04:59, when it sinks below 21° above your western horizon.
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M10 (mag 6.6) will become visible at around 20:42 (PDT), 51° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:01.
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Galaxies
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M31 (mag 3.4) is visible in the morning sky, becoming accessible around 21:29, when it reaches an altitude of 16° above your north-eastern horizon. It will then reach its highest point in the sky at 03:58, 82° above your northern horizon. It will be lost to dawn twilight around 05:08, 74° above your north-western horizon.
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M33 (mag 5.8) is visible in the morning sky, becoming accessible around 23:15, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:49, 86° above your southern horizon. It will be lost to dawn twilight around 05:07, 84° above your south-western horizon.
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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 20:42 (PDT), 23° above your northern horizon. It will be lost to dawn twilight at around 05:07, 21° above your northern horizon.
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NGC253 (mag 7.1) is visible in the morning sky, becoming accessible around 01:43, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:03, 30° above your southern horizon. It will be lost to dawn twilight around 05:07, 28° above your southern horizon.
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M101 (mag 7.9) will become visible at around 20:42 (PDT), 49° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:14.
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M94 (mag 8.2) will become visible at around 20:42 (PDT), 35° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:33.
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M51 (mag 8.4) will become visible at around 20:42 (PDT), 43° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:57.
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NGC2403 (mag 8.9) is visible in the dawn sky, becoming accessible around 03:18 (PDT), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 32° before fading from view as dawn breaks at 05:07.
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Nebulae
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M8 (mag 5.8) is visible in the evening sky, becoming accessible around 20:42 (PDT), 30° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:16, 31° above your southern horizon. It will continue to be observable until around 23:46, when it sinks below 21° above your south-western horizon.
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