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 04:47, until soon before it sets at 16:26. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 02:41 (PDT) – 3 hours and 10 minutes before the Sun – and reaching an altitude of 29° above the eastern horizon before fading from view as dawn breaks at around 05:12.
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M45 (mag 1.3) is visible in the dawn sky, rising at 01:36 (PDT) and reaching an altitude of 41° above the eastern horizon before fading from view as dawn breaks at around 05:08.
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M7 (mag 3.3) is visible in the evening sky, becoming accessible around 21:08 (PDT), 16° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:53, 21° above your southern horizon. It will continue to be observable until around 00:42, when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible in the evening sky, becoming accessible around 21:10 (PDT), 20° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:40, 23° above your southern horizon. It will continue to be observable until around 00:35, 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 21:10 (PDT), 53° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:46, 61° above your southern horizon. It will continue to be observable until around 03:32, 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 00:03 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 54° before fading from view as dawn breaks at 04:42.
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NGC6633 (mag 4.6) is visible in the evening sky, becoming accessible around 21:10 (PDT), 48° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:27, 62° above your southern horizon. It will continue to be observable until around 04:11, 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 21:10 (PDT), 45° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:38, 61° above your southern horizon. It will continue to be observable until around 04:20, 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 21:10 (PDT), 22° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:36, 32° above your southern horizon. It will continue to be observable until around 02:18, 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 21:10 (PDT), 29° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:23, 29° above your southern horizon. It will continue to be observable until around 23:45, when it sinks below 20° above your south-western horizon.
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M5 (mag 5.7) will become visible at around 21:10 (PDT), 55° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:27.
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M13 (mag 5.8) is visible in the evening sky, becoming accessible around 21:10 (PDT), 83° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:41, 87° above your northern horizon. It will continue to be observable until around 03:29, 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 21:10 (PDT), 52° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:47, 54° above your southern horizon. It will continue to be observable until around 01:53, when it sinks below 21° above your western horizon.
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M3 (mag 6.3) will become visible at around 21:10 (PDT), 57° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:11.
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M15 (mag 6.3) is visible in the morning sky, becoming accessible around 21:47, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:33, 68° above your southern horizon. It will be lost to dawn twilight around 04:42, 53° above your south-western horizon.
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M55 (mag 6.3) is visible between 23:19 and 02:08. It will become accessible at around 23:19, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 00:43, 24° above your southern horizon. It will become inaccessible at around 02:08 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) is visible in the evening sky, becoming accessible around 21:10 (PDT), 24° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:01, 25° above your southern horizon. It will continue to be observable until around 23:36, when it sinks below 21° above your southern horizon.
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M92 (mag 6.5) is visible in the evening sky, becoming accessible around 21:10 (PDT), 74° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:17, 80° above your northern horizon. It will continue to be observable until around 04:20, when it sinks below 21° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 22:26, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 02:36, 55° above your southern horizon. It will be lost to dawn twilight around 04:42, 44° above your south-western horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 21:10 (PDT), 50° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:57, 51° above your southern horizon. It will continue to be observable until around 01:56, 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 21:15 (PDT) and reaching an altitude of 75° above the north-eastern horizon before fading from view as dawn breaks at around 04:43.
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M33 (mag 5.8) is visible in the dawn sky, rising at 22:58 (PDT) and reaching an altitude of 65° above the eastern horizon before fading from view as dawn breaks at around 04:42.
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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 21:10 (PDT), 30° above your north-western horizon. It will be lost to dawn twilight at around 04:42, 14° above your northern horizon.
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NGC253 (mag 7.1) is visible in the dawn sky, rising at 01:01 (PDT) and reaching an altitude of 28° above the southern horizon before fading from view as dawn breaks at around 04:42.
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M101 (mag 7.9) will become visible at around 21:10 (PDT), 59° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 06:01.
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M94 (mag 8.2) will become visible at around 21:10 (PDT), 50° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:20.
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M51 (mag 8.4) will become visible at around 21:10 (PDT), 57° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:44.
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M104 (mag 8.6) will become visible at around 21:10 (PDT), 22° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 10 minutes after the Sun at 23:11.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 05:17, until soon before it sets at 17:50. 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 in the evening sky, becoming accessible around 21:10 (PDT), 25° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:03, 31° above your southern horizon. It will continue to be observable until around 01:33, when it sinks below 21° above your south-western horizon.
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