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 03:39 (PDT) – 2 hours and 4 minutes before the Sun – and reaching an altitude of 15° above the eastern horizon before fading from view as dawn breaks at around 05:02.
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M45 (mag 1.3) is visible in the dawn sky, rising at 02:34 (PDT) – 3 hours and 9 minutes before the Sun – and reaching an altitude of 27° 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 22:03 and 01:40. It will become accessible at around 22:03, when it rises to an altitude of 16° above your south-eastern horizon. It will reach its highest point in the sky at 23:51, 21° above your southern horizon. It will become inaccessible at around 01:40 when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible between 21:43 and 01:33. It will become accessible at around 21:43, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 23:38, 23° above your southern horizon. It will become inaccessible at around 01:33 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 21:17 (PDT), 45° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:44, 61° above your southern horizon. It will be lost to dawn twilight at around 04:32, 18° above your western horizon.
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Caldwell 14 (mag 4.3) is visible in the dawn sky, becoming accessible around 01:01 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 45° before fading from view as dawn breaks at 04:32.
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NGC6633 (mag 4.6) is visible all night. It will become visible at around 21:17 (PDT), 38° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:29, 62° above your southern horizon. It will be lost to dawn twilight at around 04:32, 27° above your western horizon.
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IC4756 (mag 4.6) is visible all night. It will become visible at around 21:17 (PDT), 35° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:40, 61° above your southern horizon. It will be lost to dawn twilight at around 04:32, 29° above your western horizon.
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Globular clusters
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M22 (mag 5.2) is visible between 21:56 and 03:20. It will become accessible at around 21:56, when it rises to an altitude of 20° above your south-eastern horizon. It will reach its highest point in the sky at 00:38, 32° above your southern horizon. It will become inaccessible at around 03:20 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 21:17 (PDT), 27° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:21, 29° above your southern horizon. It will continue to be observable until around 00:43, when it sinks below 20° above your south-western horizon.
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M5 (mag 5.7) will become visible at around 21:17 (PDT), 58° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:25.
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M13 (mag 5.8) is visible in the evening sky, becoming accessible around 21:17 (PDT), 73° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:39, 87° above your northern horizon. It will continue to be observable until around 04:27, when it sinks below 21° above your north-western horizon.
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M12 (mag 6.1) is visible in the evening sky, becoming accessible around 21:17 (PDT), 48° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:45, 54° above your southern horizon. It will continue to be observable until around 02:51, when it sinks below 21° above your western horizon.
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M3 (mag 6.3) will become visible at around 21:17 (PDT), 68° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:09.
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M15 (mag 6.3) is visible in the morning sky, becoming accessible around 22:45, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:31, 68° above your southern horizon. It will be lost to dawn twilight around 04:32, 64° above your south-western horizon.
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M55 (mag 6.3) is visible between 00:17 and 03:06. It will become accessible at around 00:17, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 01:41, 24° above your southern horizon. It will become inaccessible at around 03:06 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) is visible between 21:24 and 00:34. It will become accessible at around 21:24, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 22:59, 25° above your southern horizon. It will become inaccessible at around 00:34 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 21:17 (PDT), 65° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:15, 80° above your northern horizon. It will be lost to dawn twilight at around 04:32, 30° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 23:24, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:34, 55° above your southern horizon. It will be lost to dawn twilight around 04:32, 52° above your south-western horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 21:17 (PDT), 45° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:55, 51° above your southern horizon. It will continue to be observable until around 02:54, 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 22:13 (PDT) and reaching an altitude of 63° 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 23:56 (PDT) and reaching an altitude of 51° above the eastern horizon before fading from view as dawn breaks at around 04:32.
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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 21:17 (PDT), 34° above your north-western horizon. It will be lost to dawn twilight at around 04:32, 13° above your northern horizon.
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NGC253 (mag 7.1) is visible in the dawn sky, rising at 01:59 (PDT) – 3 hours and 44 minutes before the Sun – and reaching an altitude of 22° above the south-eastern horizon before fading from view as dawn breaks at around 04:32.
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M101 (mag 7.9) will become visible at around 21:17 (PDT), 65° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 06:59.
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M94 (mag 8.2) will become visible at around 21:17 (PDT), 59° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:18.
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M51 (mag 8.4) will become visible at around 21:17 (PDT), 65° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:42.
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M104 (mag 8.6) will become visible at around 21:17 (PDT), 30° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:09.
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Nebulae
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M8 (mag 5.8) is visible between 21:35 and 02:35. It will become accessible at around 21:35, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:05, 31° above your southern horizon. It will become inaccessible at around 02:35 when it sinks below 21° above your south-western horizon.
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