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 08:46, until soon before it sets at 20:03. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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IC4665 (mag 4.2) is visible all night. It will become visible at around 00:03 (CEST), 34° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 02:37, 43° above your southern horizon. It will be lost to dawn twilight at around 02:57, 43° above your southern horizon.
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Caldwell 14 (mag 4.3) is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 02:57, 28° above your north-eastern horizon. At dusk, it will become visible at around 00:03 (CEST), 20° above your northern horizon.
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NGC6633 (mag 4.6) is visible all night. It will become visible at around 00:03 (CEST), 29° above your south-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 43° above your southern horizon.
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IC4756 (mag 4.6) is visible all night. It will become visible at around 00:03 (CEST), 27° above your south-eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 42° above your southern horizon.
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Globular clusters
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M5 (mag 5.7) is visible all night. It will become visible at around 00:03 (CEST), 39° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:10, 39° above your southern horizon. It will be lost to dawn twilight at around 02:57, 28° above your south-western horizon.
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M13 (mag 5.8) is visible all night. It will become visible at around 00:03 (CEST), 68° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:33, 74° above your southern horizon. It will be lost to dawn twilight at around 02:57, 68° above your south-western horizon.
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M12 (mag 6.1) is visible all night. It will become visible at around 00:03 (CEST), 32° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:38, 35° above your southern horizon. It will be lost to dawn twilight at around 02:57, 33° above your south-western horizon.
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M3 (mag 6.3) is visible all night. It will become visible at around 00:03 (CEST), 60° above your south-western horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 36° above your western horizon.
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M15 (mag 6.3) is visible in the dawn sky, rising at 23:11 (CEST) and reaching an altitude of 32° above the south-eastern horizon before fading from view as dawn breaks at around 02:57.
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M92 (mag 6.5) is visible all night. It will become visible at around 00:03 (CEST), 67° above your eastern horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 77° above your south-western horizon.
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M10 (mag 6.6) is visible all night. It will become visible at around 00:03 (CEST), 29° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:48, 33° above your southern horizon. It will be lost to dawn twilight at around 02:57, 31° above your southern horizon.
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Galaxies
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M31 (mag 3.4) is visible in the dawn sky, becoming accessible around 01:31 (CEST), when it reaches an altitude of 16° above your north-eastern horizon. It will then reach an altitude of 27° before fading from view as dawn breaks at 02:59.
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M81 (mag 6.9) is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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M101 (mag 7.9) is visible all night because it is circumpolar. It will be highest in the sky at dusk, becoming accessible at around 00:03 (CEST), 78° above your western horizon. It will be lost to dawn twilight at around 02:57, 54° above your north-western horizon.
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M94 (mag 8.2) is visible all night. It will become visible at around 00:03 (CEST), 63° above your western horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 37° above your western horizon.
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M51 (mag 8.4) is visible all night. It will become visible at around 00:03 (CEST), 72° above your western horizon, as dusk fades to darkness. It will be lost to dawn twilight at around 02:57, 46° above your western horizon.
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NGC2403 (mag 8.9) is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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Nebulae
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Caldwell 49 (mag 0.0) is visible from soon after it rises, at 08:51, until soon before it sets at 21:51. Always take extreme caution when trying to make daytime observations of the Moon while the Sun is above the horizon.
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