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 15:35, until soon before it sets at 03:14.
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Collinder 50 (mag 1.0) is visible in the evening sky, becoming accessible around 17:47 (PST), 51° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:16, 71° above your southern horizon. It will continue to be observable until around 02:01, 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 17:50 (PST), 64° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:37, 80° above your southern horizon. It will continue to be observable until around 01:40, when it sinks below 12° above your western horizon.
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NGC2451 (mag 2.8) is visible between 22:14 and 00:55. It will become accessible at around 22:14, when it rises to an altitude of 15° above your southern horizon. It will reach its highest point in the sky at 23:34, 17° above your southern horizon. It will become inaccessible at around 00:55 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 19:00, when it reaches an altitude of 16° above your eastern horizon. It will then reach its highest point in the sky at 00:33, 75° above your southern horizon. It will be lost to dawn twilight around 05:55, 18° above your western horizon.
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M42 (mag 4.0) is visible in the evening sky, becoming accessible around 18:12 (PST), 29° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:25, 50° above your southern horizon. It will continue to be observable until around 01:41, when it sinks below 17° above your western horizon.
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NGC2232 (mag 4.2) is visible in the evening sky, becoming accessible around 18:12 (PST), 20° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:17, 51° above your southern horizon. It will continue to be observable until around 02:33, when it sinks below 18° above your western horizon.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 03:20 (PST) – 3 hours and 33 minutes before the Sun – and reaching an altitude of 30° above the eastern horizon before fading from view as dawn breaks at around 05:51.
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Caldwell 14 (mag 4.3) will become visible at around 18:12 (PST), 66° above your northern horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 01:29 when it dips 18° above your north-western horizon.
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M47 (mag 4.4) is visible between 19:46 and 03:05. It will become accessible at around 19:46, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 23:26, 41° above your southern horizon. It will become inaccessible at around 03:05 when it sinks below 18° above your south-western horizon.
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M41 (mag 4.5) is visible between 19:25 and 01:45. It will become accessible at around 19:25, when it rises to an altitude of 18° above your south-eastern horizon. It will reach its highest point in the sky at 22:35, 35° above your southern horizon. It will become inaccessible at around 01:45 when it sinks below 18° above your south-western horizon.
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NGC6633 (mag 4.6) is visible in the dawn sky, rising at 03:58 (PST) – 2 hours and 55 minutes before the Sun – and reaching an altitude of 22° above the eastern horizon before fading from view as dawn breaks at around 05:51.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 04:12 (PST) – 2 hours and 41 minutes before the Sun – and reaching an altitude of 19° above the eastern horizon before fading from view as dawn breaks at around 05:51.
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Globular clusters
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M5 (mag 5.7) is visible in the dawn sky, rising at 01:02 (PST) and reaching an altitude of 53° above the south-eastern horizon before fading from view as dawn breaks at around 05:51.
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M13 (mag 5.8) is visible in the dawn sky, rising at 00:29 (PST) and reaching an altitude of 56° above the eastern horizon before fading from view as dawn breaks at around 05:51.
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M12 (mag 6.1) is visible in the dawn sky, rising at 02:41 (PST) and reaching an altitude of 36° above the south-eastern horizon before fading from view as dawn breaks at around 05:51.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 00:08, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 05:34, 84° above your southern horizon. It will be lost to dawn twilight around 05:51, 83° above your south-western horizon.
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M92 (mag 6.5) is visible in the dawn sky, rising at 00:26 (PST) and reaching an altitude of 50° above the north-eastern horizon before fading from view as dawn breaks at around 05:51.
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M10 (mag 6.6) is visible in the dawn sky, rising at 02:57 (PST) – 3 hours and 56 minutes before the Sun – and reaching an altitude of 33° above the south-eastern horizon before fading from view as dawn breaks at around 05:51.
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Galaxies
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M31 (mag 3.4) will become visible at around 18:12 (PST), 69° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:03.
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M33 (mag 5.8) will become visible at around 18:12 (PST), 79° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:02.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 01:48, 54° above your northern horizon. At dusk, it will become visible at around 18:12 (PST), 23° above your northern horizon. It will be lost to dawn twilight at around 05:51, 41° above your north-western horizon.
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NGC253 (mag 7.1) will become visible at around 18:12 (PST), 26° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 21:26.
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M83 (mag 7.2) is visible in the morning sky, becoming accessible around 03:51, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 05:29, 26° above your southern horizon. It will be lost to dawn twilight around 05:51, 25° above your southern horizon.
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M101 (mag 7.9) is visible in the dawn sky, rising at 18:58 (PST) and reaching an altitude of 69° above the northern horizon before fading from view as dawn breaks at around 05:51.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 22:45, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 04:43, 82° above your northern horizon. It will be lost to dawn twilight around 05:51, 74° above your north-western horizon.
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M51 (mag 8.4) is visible in the morning sky, becoming accessible around 23:07, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 05:22, 76° above your northern horizon. It will be lost to dawn twilight around 05:51, 75° above your northern horizon.
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M104 (mag 8.6) is visible in the morning sky, becoming accessible around 01:00, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:32, 44° above your southern horizon. It will be lost to dawn twilight around 05:51, 40° above your south-western horizon.
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NGC2403 (mag 8.9) is visible all night. It will become visible at around 18:12 (PST), 35° above your north-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 05:51, 28° 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 16:05, until soon before it sets at 04:38.
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