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 13:10, until soon before it sets at 00:50.
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Collinder 50 (mag 1.0) will become visible at around 19:32 (PDT), 61° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:40.
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M45 (mag 1.3) will become visible at around 19:35 (PDT), 57° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:26.
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NGC2451 (mag 2.8) is visible between 19:49 and 22:30. It will become accessible at around 19:49, when it rises to an altitude of 15° above your southern horizon. It will reach its highest point in the sky at 21:10, 17° above your southern horizon. It will become inaccessible at around 22:30 when it sinks below 15° above your southern horizon.
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M44 (mag 3.1) is visible in the evening sky, becoming accessible around 19:52 (PDT), 57° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:05, 75° above your southern horizon. It will continue to be observable until around 03:38, when it sinks below 16° above your western horizon.
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M7 (mag 3.3) is visible in the dawn sky, rising at 03:09 (PDT) – 3 hours and 54 minutes before the Sun – and reaching an altitude of 18° above the southern horizon before fading from view as dawn breaks at around 06:06.
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M42 (mag 4.0) will become visible at around 19:56 (PDT), 48° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:48.
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M6 (mag 4.2) is visible in the dawn sky, rising at 02:45 (PDT) and reaching an altitude of 22° above the southern horizon before fading from view as dawn breaks at around 06:04.
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NGC2232 (mag 4.2) will become visible at around 19:56 (PDT), 51° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:42.
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IC4665 (mag 4.2) is visible in the dawn sky, rising at 00:55 (PDT) and reaching an altitude of 57° above the south-eastern horizon before fading from view as dawn breaks at around 06:04.
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Caldwell 14 (mag 4.3) will become visible at around 19:56 (PDT), 42° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 23:04 when it dips 18° above your north-western horizon.
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M47 (mag 4.4) is visible in the evening sky, becoming accessible around 19:56 (PDT), 39° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:01, 41° above your southern horizon. It will continue to be observable until around 00:40, when it sinks below 18° above your south-western horizon.
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M41 (mag 4.5) is visible in the evening sky, becoming accessible around 19:56 (PDT), 35° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:11, 35° above your southern horizon. It will continue to be observable until around 23:20, 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 01:33 (PDT) and reaching an altitude of 52° above the south-eastern horizon before fading from view as dawn breaks at around 06:04.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 01:48 (PDT) and reaching an altitude of 49° above the south-eastern horizon before fading from view as dawn breaks at around 06:04.
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Globular clusters
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M22 (mag 5.2) is visible in the dawn sky, rising at 03:10 (PDT) – 3 hours and 53 minutes before the Sun – and reaching an altitude of 25° above the south-eastern horizon before fading from view as dawn breaks at around 06:04.
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M4 (mag 5.4) is visible in the morning sky, becoming accessible around 03:29, when it reaches an altitude of 20° above your south-eastern horizon. It will then reach its highest point in the sky at 05:51, 29° above your southern horizon. It will be lost to dawn twilight around 06:04, 29° above your southern horizon.
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 00:24, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:46, 58° above your southern horizon. It will be lost to dawn twilight around 06:04, 53° above your south-western horizon.
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M13 (mag 5.8) is visible in the dawn sky, rising at 22:05 (PDT) and reaching an altitude of 87° above the northern horizon before fading from view as dawn breaks at around 06:04.
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M12 (mag 6.1) is visible in the dawn sky, rising at 00:17 (PDT) and reaching an altitude of 53° above the southern horizon before fading from view as dawn breaks at around 06:04.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 21:44, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:10, 84° above your southern horizon. It will be lost to dawn twilight around 06:04, 52° above your western horizon.
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M62 (mag 6.4) is visible in the dawn sky, rising at 01:57 (PDT) and reaching an altitude of 25° above the southern horizon before fading from view as dawn breaks at around 06:04.
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M92 (mag 6.5) is visible in the dawn sky, rising at 22:02 (PDT) and reaching an altitude of 77° above the north-eastern horizon before fading from view as dawn breaks at around 06:04.
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M10 (mag 6.6) is visible in the dawn sky, rising at 00:32 (PDT) and reaching an altitude of 51° above the southern horizon before fading from view as dawn breaks at around 06:04.
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Galaxies
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M31 (mag 3.4) will become visible at around 19:56 (PDT), 23° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 41 minutes after the Sun at 22:38.
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M33 (mag 5.8) will become visible at around 19:56 (PDT), 28° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 40 minutes after the Sun at 22:37.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 23:20, 54° above your northern horizon. At dusk, it will become visible at around 19:56 (PDT), 45° above your north-eastern horizon. It will be lost to dawn twilight at around 06:04, 28° above your north-western horizon.
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M83 (mag 7.2) is visible between 01:26 and 04:43. It will become accessible at around 01:26, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 03:04, 26° above your southern horizon. It will become inaccessible at around 04:43 when it sinks below 21° above your southern horizon.
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M101 (mag 7.9) is visible in the morning sky, becoming accessible around 20:52, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:31, 69° above your northern horizon. It will be lost to dawn twilight around 06:04, 56° above your north-western horizon.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 20:21, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 02:18, 82° above your northern horizon. It will be lost to dawn twilight around 06:04, 45° above your north-western horizon.
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M51 (mag 8.4) is visible in the morning sky, becoming accessible around 20:43, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 02:57, 76° above your northern horizon. It will be lost to dawn twilight around 06:04, 52° above your north-western horizon.
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M104 (mag 8.6) is visible between 22:35 and 05:40. It will become accessible at around 22:35, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 02:08, 44° above your southern horizon. It will become inaccessible at around 05:40 when it sinks below 21° above your south-western horizon.
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NGC2403 (mag 8.9) is visible all night. It will become visible at around 19:56 (PDT), 56° above your northern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:01, 58° above your northern horizon. It will continue to be observable until around 04:35, when it sinks below 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 13:41, until soon before it sets at 02:13.
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M8 (mag 5.8) is visible in the dawn sky, rising at 02:39 (PDT) and reaching an altitude of 28° above the south-eastern horizon before fading from view as dawn breaks at around 06:04.
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