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 17:33, until soon before it sets at 05:12.
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Collinder 50 (mag 1.0) is visible in the evening sky, becoming accessible around 17:24 (PST), 22° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:14, 71° above your southern horizon. It will continue to be observable until around 03:59, when it sinks below 11° above your western horizon.
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M45 (mag 1.3) is visible in the evening sky, becoming accessible around 17:27 (PST), 35° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:35, 80° above your southern horizon. It will continue to be observable until around 03:38, when it sinks below 12° above your western horizon.
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NGC2451 (mag 2.8) is visible between 00:16 and 02:56. It will become accessible at around 00:16, when it rises to an altitude of 15° above your southern horizon. It will reach its highest point in the sky at 01:36, 17° above your southern horizon. It will become inaccessible at around 02:56 when it sinks below 15° above your southern horizon.
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M44 (mag 3.1) is visible in the morning sky, becoming accessible around 20:58, when it reaches an altitude of 16° above your eastern horizon. It will then reach its highest point in the sky at 02:31, 75° above your southern horizon. It will be lost to dawn twilight around 05:51, 43° above your western horizon.
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M42 (mag 4.0) is visible between 19:07 and 03:39. It will become accessible at around 19:07, when it rises to an altitude of 17° above your eastern horizon. It will reach its highest point in the sky at 23:23, 50° above your southern horizon. It will become inaccessible at around 03:39 when it sinks below 17° above your western horizon.
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NGC2232 (mag 4.2) is visible between 20:03 and 04:35. It will become accessible at around 20:03, when it rises to an altitude of 18° above your eastern horizon. It will reach its highest point in the sky at 00:19, 51° above your southern horizon. It will become inaccessible at around 04:35 when it sinks below 18° above your western horizon.
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Caldwell 14 (mag 4.3) is visible all night. It will become visible at around 17:50 (PST), 57° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:08, 66° above your northern horizon. It will continue to be observable until around 03:26, when it sinks below 18° above your north-western horizon.
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M47 (mag 4.4) is visible between 21:48 and 05:07. It will become accessible at around 21:48, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 01:27, 41° above your southern horizon. It will become inaccessible at around 05:07 when it sinks below 18° above your south-western horizon.
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M41 (mag 4.5) is visible between 21:27 and 03:47. It will become accessible at around 21:27, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 00:37, 35° above your southern horizon. It will become inaccessible at around 03:47 when it sinks below 18° above your south-western horizon.
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Globular clusters
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M5 (mag 5.7) is visible in the dawn sky, rising at 03:00 (PST) – 3 hours and 51 minutes before the Sun – and reaching an altitude of 33° above the eastern horizon before fading from view as dawn breaks at around 05:47.
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M13 (mag 5.8) is visible in the dawn sky, rising at 02:27 (PST) and reaching an altitude of 33° above the north-eastern horizon before fading from view as dawn breaks at around 05:47.
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M3 (mag 6.3) is visible in the dawn sky, rising at 00:03 (PST) and reaching an altitude of 66° above the eastern horizon before fading from view as dawn breaks at around 05:47.
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M15 (mag 6.3) will become visible at around 17:50 (PST), 49° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 21:55.
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M92 (mag 6.5) is visible in the dawn sky, rising at 02:24 (PST) and reaching an altitude of 29° above the north-eastern horizon before fading from view as dawn breaks at around 05:47.
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M2 (mag 6.6) will become visible at around 17:50 (PST), 40° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 21:23.
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Galaxies
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M31 (mag 3.4) is visible in the evening sky, becoming accessible around 17:50 (PST), 79° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:31, 82° above your northern horizon. It will continue to be observable until around 01:00, when it sinks below 16° above your north-western horizon.
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M33 (mag 5.8) is visible in the evening sky, becoming accessible around 17:50 (PST), 70° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:22, 86° above your southern horizon. It will continue to be observable until around 00:55, when it sinks below 21° above your north-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 03:46, 54° above your northern horizon. At dusk, it will become visible at around 17:50 (PST), 15° above your northern horizon. It will be lost to dawn twilight at around 05:47, 51° above your northern horizon.
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NGC253 (mag 7.1) is visible in the evening sky, becoming accessible around 17:50 (PST), 29° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:36, 30° above your southern horizon. It will continue to be observable until around 20:56, when it sinks below 21° above your south-western horizon.
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M101 (mag 7.9) is visible in the dawn sky, rising at 20:56 (PST) and reaching an altitude of 59° above the north-eastern horizon before fading from view as dawn breaks at around 05:47.
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M94 (mag 8.2) is visible in the dawn sky, rising at 22:12 (PST) and reaching an altitude of 77° above the north-eastern horizon before fading from view as dawn breaks at around 05:47.
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M51 (mag 8.4) is visible in the dawn sky, rising at 22:06 (PST) and reaching an altitude of 68° above the north-eastern horizon before fading from view as dawn breaks at around 05:47.
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M104 (mag 8.6) is visible in the dawn sky, rising at 00:59 (PST) and reaching an altitude of 43° above the southern horizon before fading from view as dawn breaks at around 05:47.
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NGC2403 (mag 8.9) is visible in the morning sky, becoming accessible around 17:55, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 01:28, 58° above your northern horizon. It will be lost to dawn twilight at around 05:47, 40° 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 18:07, until soon before it sets at 06:40.
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