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 03:56, until soon before it sets at 15:35.
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Collinder 50 (mag 1.0) is visible in the dawn sky, rising at 01:50 (PDT) and reaching an altitude of 42° above the eastern horizon before fading from view as dawn breaks at around 05:22.
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M45 (mag 1.3) is visible in the dawn sky, rising at 00:45 (PDT) and reaching an altitude of 53° above the eastern horizon before fading from view as dawn breaks at around 05:18.
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M7 (mag 3.3) is visible in the evening sky, becoming accessible around 20:56 (PDT), 19° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:02, 21° above your southern horizon. It will continue to be observable until around 23:51, when it sinks below 16° above your south-western horizon.
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M6 (mag 4.2) is visible in the evening sky, becoming accessible around 20:59 (PDT), 22° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:49, 23° above your southern horizon. It will continue to be observable until around 23:44, 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 20:59 (PDT), 58° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:55, 61° above your southern horizon. It will continue to be observable until around 02:41, 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 23:12 (PDT), when it reaches an altitude of 18° above your north-eastern horizon. It will then reach an altitude of 61° before fading from view as dawn breaks at 04:54.
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NGC6633 (mag 4.6) is visible in the evening sky, becoming accessible around 20:59 (PDT), 54° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:36, 62° above your southern horizon. It will continue to be observable until around 03:20, 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 20:59 (PDT), 51° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:47, 61° above your southern horizon. It will continue to be observable until around 03:29, 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 20:59 (PDT), 26° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:45, 32° above your southern horizon. It will continue to be observable until around 01:27, when it sinks below 20° above your south-western horizon.
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M4 (mag 5.4) will become visible at around 20:59 (PDT), 29° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:17.
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M5 (mag 5.7) will become visible at around 20:59 (PDT), 51° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:36.
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M13 (mag 5.8) will become visible at around 20:59 (PDT), 87° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 04:54.
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M12 (mag 6.1) will become visible at around 20:59 (PDT), 53° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:53.
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M3 (mag 6.3) will become visible at around 20:59 (PDT), 49° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:20.
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M15 (mag 6.3) is visible all night. It will become visible at around 20:59 (PDT), 23° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:42, 68° above your southern horizon. It will be lost to dawn twilight at around 04:54, 41° above your western horizon.
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M55 (mag 6.3) is visible between 22:24 and 01:13. It will become accessible at around 22:24, when it rises to an altitude of 21° above your southern horizon. It will reach its highest point in the sky at 23:48, 24° above your southern horizon. It will become inaccessible at around 01:13 when it sinks below 21° above your southern horizon.
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M62 (mag 6.4) is visible in the evening sky, becoming accessible around 20:59 (PDT), 25° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:10, 25° above your southern horizon. It will continue to be observable until around 22:45, when it sinks below 21° above your southern horizon.
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M92 (mag 6.5) is visible in the evening sky, becoming accessible around 20:59 (PDT), 79° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:26, 80° above your northern horizon. It will continue to be observable until around 03:29, when it sinks below 21° above your north-western horizon.
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M2 (mag 6.6) is visible in the morning sky, becoming accessible around 21:35, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 01:45, 55° above your southern horizon. It will be lost to dawn twilight around 04:54, 33° above your south-western horizon.
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M10 (mag 6.6) is visible in the evening sky, becoming accessible around 20:59 (PDT), 51° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:06, 51° above your southern horizon. It will continue to be observable until around 01:05, when it sinks below 21° above your western horizon.
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Galaxies
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M31 (mag 3.4) is visible in the morning sky, becoming accessible around 22:25, when it reaches an altitude of 16° above your north-eastern horizon. It will then reach its highest point in the sky at 04:54, 82° above your northern horizon. It will be lost to dawn twilight around 04:54, 82° above your northern horizon.
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M33 (mag 5.8) is visible in the dawn sky, rising at 22:07 (PDT) and reaching an altitude of 78° above the eastern horizon before fading from view as dawn breaks at around 04:54.
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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 20:59 (PDT), 26° above your north-western horizon. It will be lost to dawn twilight at around 04:54, 17° above your northern horizon.
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NGC253 (mag 7.1) is visible in the dawn sky, rising at 00:10 (PDT) and reaching an altitude of 30° above the southern horizon before fading from view as dawn breaks at around 04:54.
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M101 (mag 7.9) will become visible at around 20:59 (PDT), 54° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 05:10.
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M94 (mag 8.2) will become visible at around 20:59 (PDT), 43° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:29.
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M51 (mag 8.4) will become visible at around 20:59 (PDT), 50° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 02:53.
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NGC2403 (mag 8.9) is visible in the dawn sky, becoming accessible around 04:14 (PDT), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 25° before fading from view as dawn breaks at 04:54.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 04:26, until soon before it sets at 16:59. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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M8 (mag 5.8) is visible in the evening sky, becoming accessible around 20:59 (PDT), 29° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:12, 31° above your southern horizon. It will continue to be observable until around 00:42, when it sinks below 21° above your south-western horizon.
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