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 02:57, until soon before it sets at 14:36.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 00:51 (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 23:46 (PDT) and reaching an altitude of 68° above the eastern horizon before fading from view as dawn breaks at around 05:31.
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M7 (mag 3.3) is visible in the evening sky, becoming accessible around 20:38 (PDT), 20° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:03, 21° above your southern horizon. It will continue to be observable until around 22:52, 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 02:59 (PDT) – 3 hours and 12 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks at around 05:08.
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M6 (mag 4.2) is visible in the evening sky, becoming accessible around 20:41 (PDT), 23° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:50, 23° above your southern horizon. It will continue to be observable until around 22:45, 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 20:41 (PDT), 61° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:56, 61° above your southern horizon. It will continue to be observable until around 01:42, 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 22:13 (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 05:08.
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NGC6633 (mag 4.6) is visible in the evening sky, becoming accessible around 20:41 (PDT), 59° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:37, 62° above your southern horizon. It will continue to be observable until around 02:21, 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 20:41 (PDT), 57° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:48, 61° above your southern horizon. It will continue to be observable until around 02:30, 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 20:41 (PDT), 30° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:46, 32° above your southern horizon. It will continue to be observable until around 00:28, when it sinks below 20° above your south-western horizon.
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M4 (mag 5.4) will become visible at around 20:41 (PDT), 27° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:18.
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M5 (mag 5.7) will become visible at around 20:41 (PDT), 45° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:37.
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M13 (mag 5.8) will become visible at around 20:41 (PDT), 79° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 03:55.
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M12 (mag 6.1) will become visible at around 20:41 (PDT), 52° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:54.
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M3 (mag 6.3) will become visible at around 20:41 (PDT), 41° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:21.
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M15 (mag 6.3) is visible all night. It will become visible at around 20:41 (PDT), 31° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:43, 68° above your southern horizon. It will be lost to dawn twilight at around 05:08, 26° above your western horizon.
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M55 (mag 6.3) is visible between 21:25 and 00:14. It will become accessible at around 21:25, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 22:49, 24° above your southern horizon. It will become inaccessible at around 00:14 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) will become visible at around 20:41 (PDT), 25° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:42.
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M92 (mag 6.5) will become visible at around 20:41 (PDT), 80° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 05:09.
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M2 (mag 6.6) is visible in the evening sky, becoming accessible around 20:41 (PDT), 23° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:46, 55° above your southern horizon. It will continue to be observable until around 04:56, when it sinks below 21° above your western horizon.
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M10 (mag 6.6) will become visible at around 20:41 (PDT), 51° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:58.
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Galaxies
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M31 (mag 3.4) is visible in the morning sky, becoming accessible around 21:26, when it reaches an altitude of 16° above your north-eastern horizon. It will then reach its highest point in the sky at 03:55, 82° above your northern horizon. It will be lost to dawn twilight around 05:08, 73° above your north-western horizon.
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M33 (mag 5.8) is visible in the morning sky, becoming accessible around 23:13, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:46, 86° above your southern horizon. It will be lost to dawn twilight around 05:08, 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 20:41 (PDT), 23° above your northern horizon. It will be lost to dawn twilight at around 05:08, 22° above your northern horizon.
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NGC253 (mag 7.1) is visible in the morning sky, becoming accessible around 01:40, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:00, 30° above your southern horizon. It will be lost to dawn twilight around 05:08, 28° above your southern horizon.
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M101 (mag 7.9) will become visible at around 20:41 (PDT), 48° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:11.
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M94 (mag 8.2) will become visible at around 20:41 (PDT), 35° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:30.
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M51 (mag 8.4) will become visible at around 20:41 (PDT), 43° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:54.
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NGC2403 (mag 8.9) is visible in the dawn sky, becoming accessible around 03:15 (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 05:08.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 03:27, until soon before it sets at 16:00.
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M8 (mag 5.8) is visible in the evening sky, becoming accessible around 20:41 (PDT), 31° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:13, 31° above your southern horizon. It will continue to be observable until around 23:43, when it sinks below 21° above your south-western horizon.
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