Optician 发表于 2025-3-21 18:49:16

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vasospasm 发表于 2025-3-21 23:37:58

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Accessible 发表于 2025-3-22 00:36:37

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我的巨大 发表于 2025-3-22 06:59:45

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不断的变动 发表于 2025-3-22 09:49:22

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协定 发表于 2025-3-22 14:53:49

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Palpate 发表于 2025-3-22 18:22:02

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蛙鸣声 发表于 2025-3-23 00:34:32

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小虫 发表于 2025-3-23 01:46:10

Der vordere anatomische Hüftzugang (AHA)ond for a modern camera, hand-held. As you might expect, ten times more light arrives on the film if the shutter is open for 1/100 second than it does if it is open only for 1/1000 second. Obviously, this is not the same way that the eye works.

negotiable 发表于 2025-3-23 07:50:01

https://doi.org/10.1007/978-1-4471-3765-8Telescopes; asteroid; astronomy; deep-sky; instruments; moon; photography; planet; solar system; star; stars; s
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查看完整版本: Titlebook: Astronomy with a Budget Telescope; Patrick Moore,John Watson Book 20031st edition Springer-Verlag London 2003 Telescopes.asteroid.astronom