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 13:06, until soon before it sets at 00:45.
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Collinder 50 (mag 1.0) will become visible at around 18:21 (PST), 70° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:35.
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M45 (mag 1.3) will become visible at around 18:24 (PST), 70° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:21.
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NGC2451 (mag 2.8) is visible between 19:44 and 22:25. It will become accessible at around 19:44, when it rises to an altitude of 15° above your southern horizon. It will reach its highest point in the sky at 21:05, 17° above your southern horizon. It will become inaccessible at around 22:25 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 18:41 (PST), 43° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:00, 75° above your southern horizon. It will continue to be observable until around 03:33, when it sinks below 16° above your western horizon.
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M42 (mag 4.0) is visible in the evening sky, becoming accessible around 18:45 (PST), 50° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:55, 50° above your southern horizon. It will continue to be observable until around 23:11, when it sinks below 17° above your western horizon.
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M6 (mag 4.2) is visible in the dawn sky, rising at 02:40 (PST) – 3 hours and 41 minutes before the Sun – and reaching an altitude of 19° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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NGC2232 (mag 4.2) is visible in the evening sky, becoming accessible around 18:45 (PST), 48° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:48, 51° above your southern horizon. It will continue to be observable until around 00:03, 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 00:50 (PST) and reaching an altitude of 52° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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Caldwell 14 (mag 4.3) will become visible at around 18:45 (PST), 51° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 22:59 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 18:45 (PST), 32° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:56, 41° 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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M41 (mag 4.5) is visible in the evening sky, becoming accessible around 18:45 (PST), 31° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:06, 35° above your southern horizon. It will continue to be observable until around 23:15, 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 01:29 (PST) and reaching an altitude of 46° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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IC4756 (mag 4.6) is visible in the dawn sky, rising at 01:43 (PST) and reaching an altitude of 43° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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Globular clusters
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M22 (mag 5.2) is visible in the dawn sky, rising at 03:05 (PST) – 3 hours and 16 minutes before the Sun – and reaching an altitude of 21° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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M4 (mag 5.4) is visible in the dawn sky, rising at 01:01 (PST) and reaching an altitude of 29° above the southern horizon before fading from view as dawn breaks at around 05:22.
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M5 (mag 5.7) is visible in the morning sky, becoming accessible around 00:19, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:41, 58° above your southern horizon. It will be lost to dawn twilight around 05:22, 56° above your southern horizon.
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M13 (mag 5.8) is visible in the dawn sky, rising at 22:00 (PST) and reaching an altitude of 81° above the eastern horizon before fading from view as dawn breaks at around 05:22.
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M12 (mag 6.1) is visible in the dawn sky, rising at 00:12 (PST) and reaching an altitude of 52° above the southern horizon before fading from view as dawn breaks at around 05:22.
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M3 (mag 6.3) is visible in the morning sky, becoming accessible around 21:39, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:05, 84° above your southern horizon. It will be lost to dawn twilight around 05:22, 60° above your western horizon.
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M62 (mag 6.4) is visible in the dawn sky, rising at 01:52 (PST) and reaching an altitude of 24° above the southern horizon before fading from view as dawn breaks at around 05:22.
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M92 (mag 6.5) is visible in the dawn sky, rising at 21:57 (PST) and reaching an altitude of 72° above the north-eastern horizon before fading from view as dawn breaks at around 05:22.
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M10 (mag 6.6) is visible in the dawn sky, rising at 00:27 (PST) and reaching an altitude of 49° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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Galaxies
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M31 (mag 3.4) will become visible at around 18:44 (PST), 35° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 22:34.
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M33 (mag 5.8) will become visible at around 18:45 (PST), 41° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 22:32.
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M81 (mag 6.9) is visible all night because it is circumpolar. It will be highest in the sky at 23:15, 54° above your northern horizon. At dusk, it will become visible at around 18:45 (PST), 39° above your north-eastern horizon. It will be lost to dawn twilight at around 05:22, 31° above your north-western horizon.
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M83 (mag 7.2) is visible between 01:21 and 04:38. It will become accessible at around 01:21, when it rises to an altitude of 21° above your south-eastern horizon. It will reach its highest point in the sky at 03:00, 26° above your southern horizon. It will become inaccessible at around 04:38 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 20:47, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 03:26, 69° above your northern horizon. It will be lost to dawn twilight around 05:22, 61° above your north-western horizon.
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M94 (mag 8.2) is visible in the morning sky, becoming accessible around 20:16, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 02:14, 82° above your northern horizon. It will be lost to dawn twilight around 05:22, 52° above your north-western horizon.
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M51 (mag 8.4) is visible in the morning sky, becoming accessible around 20:38, when it reaches an altitude of 21° above your north-eastern horizon. It will then reach its highest point in the sky at 02:52, 76° above your northern horizon. It will be lost to dawn twilight around 05:22, 59° above your north-western horizon.
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M104 (mag 8.6) is visible in the morning sky, becoming accessible around 22:30, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 02:03, 44° above your southern horizon. It will be lost to dawn twilight around 05:22, 24° above your south-western horizon.
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NGC2403 (mag 8.9) is visible all night. It will become visible at around 18:45 (PST), 52° above your northern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:56, 58° above your northern horizon. It will continue to be observable until around 04:30, 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 13:36, until soon before it sets at 02:08.
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M8 (mag 5.8) is visible in the dawn sky, rising at 02:34 (PST) – 3 hours and 47 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks at around 05:22.
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