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 06:29, until soon before it sets at 18:09. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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M45 (mag 1.3) is visible in the dawn sky, rising at 03:18 (PDT) – 2 hours and 20 minutes before the Sun – and reaching an altitude of 17° above the eastern horizon before fading from view as dawn breaks at around 04:54.
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M7 (mag 3.3) is visible between 22:51 and 02:28. It will become accessible at around 22:51, when it rises to an altitude of 16° above your south-eastern horizon. It will reach its highest point in the sky at 00:40, 21° above your southern horizon. It will become inaccessible at around 02:28 when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible between 22:31 and 02:21. It will become accessible at around 22:31, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 00:26, 23° above your southern horizon. It will become inaccessible at around 02:21 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), 37° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:32, 61° above your southern horizon. It will be lost to dawn twilight at around 04:27, 28° above your western horizon.
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Caldwell 14 (mag 4.3) is visible in the dawn sky, becoming accessible around 01:46 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 38° before fading from view as dawn breaks at 04:27.
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NGC6633 (mag 4.6) is visible all night. It will become visible at around 21:18 (PDT), 30° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:13, 62° above your southern horizon. It will be lost to dawn twilight at around 04:27, 37° 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), 27° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:24, 61° above your southern horizon. It will be lost to dawn twilight at around 04:27, 39° above your south-western horizon.
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Globular clusters
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M22 (mag 5.2) is visible between 22:40 and 04:04. It will become accessible at around 22:40, when it rises to an altitude of 20° above your south-eastern horizon. It will reach its highest point in the sky at 01:22, 32° above your southern horizon. It will become inaccessible at around 04:04 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), 24° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:06, 29° above your southern horizon. It will continue to be observable until around 01:27, 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), 56° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:01, 58° above your southern horizon. It will continue to be observable until around 02:22, 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), 64° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:24, 87° above your northern horizon. It will be lost to dawn twilight at around 04:27, 30° 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), 42° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:29, 54° above your southern horizon. It will continue to be observable until around 03:36, 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), 77° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:54.
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M15 (mag 6.3) is visible in the morning sky, becoming accessible around 23:29, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:15, 68° above your southern horizon. It will be lost to dawn twilight around 04:27, 67° above your southern horizon.
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M55 (mag 6.3) is visible between 01:01 and 03:50. It will become accessible at around 01:01, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 02:25, 24° above your southern horizon. It will become inaccessible at around 03:50 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) is visible between 22:08 and 01:19. It will become accessible at around 22:08, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 23:43, 25° above your southern horizon. It will become inaccessible at around 01:19 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), 57° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:03, 80° above your northern horizon. It will be lost to dawn twilight at around 04:27, 38° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 00:09, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:19, 55° above your southern horizon. It will be lost to dawn twilight around 04:27, 55° above your southern horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 21:18 (PDT), 39° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:39, 51° above your southern horizon. It will continue to be observable until around 03:39, 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 22:57 (PDT) and reaching an altitude of 53° above the north-eastern horizon before fading from view as dawn breaks at around 04:27.
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M33 (mag 5.8) is visible in the dawn sky, rising at 00:40 (PDT) and reaching an altitude of 41° above the eastern horizon before fading from view as dawn breaks at around 04:27.
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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), 38° above your north-western horizon. It will be lost to dawn twilight at around 04:27, 13° above your northern horizon.
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M83 (mag 7.2) will become visible at around 21:18 (PDT), 24° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:52.
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M101 (mag 7.9) will become visible at around 21:18 (PDT), 68° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 07:43.
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M94 (mag 8.2) will become visible at around 21:18 (PDT), 68° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:03.
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M51 (mag 8.4) will become visible at around 21:18 (PDT), 71° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 05:26.
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M104 (mag 8.6) will become visible at around 21:18 (PDT), 36° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:53.
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NGC2403 (mag 8.9) will become visible at around 21:18 (PDT), 25° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 21:53 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 06:59, until soon before it sets at 19:32. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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M8 (mag 5.8) is visible between 22:20 and 03:19. It will become accessible at around 22:20, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 00:49, 31° above your southern horizon. It will become inaccessible at around 03:19 when it sinks below 21° above your south-western horizon.
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