Coronary-Artery 发表于 2025-3-21 18:05:28

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Parabola 发表于 2025-3-21 23:15:55

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DRAFT 发表于 2025-3-22 03:46:54

Introduction,t, where you are on the planet Earth, second, what time of year it is, and third, when you like to do your observing. The best time to see anything through our atmosphere is when the sky object is near the meridian, the imaginary line that runs through the North Pole point in the sky, through the ze

承认 发表于 2025-3-22 07:35:10

https://doi.org/10.1007/979-8-8688-0572-1t, where you are on the planet Earth, second, what time of year it is, and third, when you like to do your observing. The best time to see anything through our atmosphere is when the sky object is near the meridian, the imaginary line that runs through the North Pole point in the sky, through the ze

葡萄糖 发表于 2025-3-22 11:12:29

Guide to Observing Deep-Sky Objects978-0-387-72851-3Series ISSN 1431-9756 Series E-ISSN 2197-6562

环形 发表于 2025-3-22 13:13:25

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环形 发表于 2025-3-22 18:07:59

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最初 发表于 2025-3-23 00:37:00

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秘方药 发表于 2025-3-23 02:54:35

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fodlder 发表于 2025-3-23 09:23:33

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