Objects in your sky: Deep Sky
by Dominic Ford
Open clusters
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 03:43 (PDT) – 1 hour and 59 minutes before the Sun – and reaching an altitude of 14° above the eastern horizon before fading from view as dawn breaks at around 05:01.
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M45 (mag 1.3) is visible in the dawn sky, rising at 02:38 (PDT) – 3 hours and 4 minutes before the Sun – and reaching an altitude of 26° above the eastern horizon before fading from view as dawn breaks at around 04:58.
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M7 (mag 3.3) is visible between 22:07 and 01:44. It will become accessible at around 22:07, when it rises to an altitude of 16° above your south-eastern horizon. It will reach its highest point in the sky at 23:55, 21° above your southern horizon. It will become inaccessible at around 01:44 when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible between 21:47 and 01:37. It will become accessible at around 21:47, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 23:42, 23° above your southern horizon. It will become inaccessible at around 01:37 when it sinks below 18° above your south-western horizon.
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IC4665 (mag 4.2) is visible all night. It will become visible at around 21:18 (PDT), 45° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:48, 61° above your southern horizon. It will be lost to dawn twilight at around 04:31, 19° above your western horizon.
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Caldwell 14 (mag 4.3) is visible in the dawn sky, becoming accessible around 01:05 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 44° before fading from view as dawn breaks at 04:31.
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NGC6633 (mag 4.6) is visible all night. It will become visible at around 21:18 (PDT), 38° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:33, 62° above your southern horizon. It will be lost to dawn twilight at around 04:31, 28° above your western horizon.
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IC4756 (mag 4.6) is visible all night. It will become visible at around 21:18 (PDT), 35° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:44, 61° above your southern horizon. It will be lost to dawn twilight at around 04:31, 30° above your western horizon.
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Globular clusters
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M22 (mag 5.2) is visible between 21:59 and 03:24. It will become accessible at around 21:59, when it rises to an altitude of 20° above your south-eastern horizon. It will reach its highest point in the sky at 00:42, 32° above your southern horizon. It will become inaccessible at around 03:24 when it sinks below 20° above your south-western horizon.
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M4 (mag 5.4) is visible in the evening sky, becoming accessible around 21:18 (PDT), 27° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:25, 29° above your southern horizon. It will continue to be observable until around 00:46, when it sinks below 20° above your south-western horizon.
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M5 (mag 5.7) is visible in the evening sky, becoming accessible around 21:18 (PDT), 58° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:20, 58° above your southern horizon. It will continue to be observable until around 01:42, when it sinks below 21° above your western horizon.
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M13 (mag 5.8) is visible all night. It will become visible at around 21:18 (PDT), 72° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:43, 87° above your northern horizon. It will be lost to dawn twilight at around 04:31, 22° above your north-western horizon.
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M12 (mag 6.1) is visible in the evening sky, becoming accessible around 21:18 (PDT), 48° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:49, 54° above your southern horizon. It will continue to be observable until around 02:55, when it sinks below 21° above your western horizon.
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M3 (mag 6.3) will become visible at around 21:18 (PDT), 69° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:13.
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M15 (mag 6.3) is visible in the morning sky, becoming accessible around 22:49, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:35, 68° above your southern horizon. It will be lost to dawn twilight around 04:31, 64° above your south-western horizon.
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M55 (mag 6.3) is visible between 00:21 and 03:10. It will become accessible at around 00:21, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 01:45, 24° above your southern horizon. It will become inaccessible at around 03:10 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) is visible between 21:27 and 00:38. It will become accessible at around 21:27, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 23:03, 25° above your southern horizon. It will become inaccessible at around 00:38 when it sinks below 21° above your southern horizon.
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M92 (mag 6.5) is visible all night. It will become visible at around 21:18 (PDT), 64° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:19, 80° above your northern horizon. It will be lost to dawn twilight at around 04:31, 31° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 23:28, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:38, 55° above your southern horizon. It will be lost to dawn twilight around 04:31, 52° above your southern horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 21:18 (PDT), 44° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:59, 51° above your southern horizon. It will continue to be observable until around 02:58, when it sinks below 21° above your western horizon.
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Galaxies
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M31 (mag 3.4) is visible in the dawn sky, rising at 22:17 (PDT) and reaching an altitude of 62° above the north-eastern horizon before fading from view as dawn breaks at around 04:32.
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M33 (mag 5.8) is visible in the dawn sky, rising at 00:00 (PDT) and reaching an altitude of 50° above the eastern horizon before fading from view as dawn breaks at around 04:31.
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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 21:18 (PDT), 35° above your north-western horizon. It will be lost to dawn twilight at around 04:31, 13° above your northern horizon.
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M101 (mag 7.9) will become visible at around 21:18 (PDT), 66° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 07:03.
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M94 (mag 8.2) will become visible at around 21:18 (PDT), 60° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:22.
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M51 (mag 8.4) will become visible at around 21:18 (PDT), 66° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:46.
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M104 (mag 8.6) will become visible at around 21:18 (PDT), 31° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:13.
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Nebulae
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M8 (mag 5.8) is visible between 21:39 and 02:39. It will become accessible at around 21:39, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:09, 31° above your southern horizon. It will become inaccessible at around 02:39 when it sinks below 21° above your south-western horizon.
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