丰富 发表于 2025-3-25 06:08:19

Observing the Messier Objects with a Small TelescopeIn the Footsteps of

compel 发表于 2025-3-25 08:57:19

visual, highly interactive learning tool that bridges the basic and clinical sciences and allows the learner to observe physiology principles in a living model. Ultrasound is also being used to teach other hea978-1-0716-1865-3978-1-0716-1863-9Series ISSN 2625-252X Series E-ISSN 2625-2538

欢笑 发表于 2025-3-25 13:04:21

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保存 发表于 2025-3-25 16:59:43

Book 2012d in listing all the major interesting deep-sky objects that today are targets for amateur astronomers..Messier‘s telescope (thought to be a 4-inch) was, by today‘s amateur standards, small. It also had rather poor optics by modern standards. Thus - and despite the fact that he was a master observer

迫击炮 发表于 2025-3-25 23:10:53

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随意 发表于 2025-3-26 00:43:26

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轻推 发表于 2025-3-26 07:46:45

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Spinous-Process 发表于 2025-3-26 09:14:24

Observing the Messier Objects with a Small Telescope978-0-387-85357-4Series ISSN 1431-9756 Series E-ISSN 2197-6562

有毒 发表于 2025-3-26 15:14:18

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小画像 发表于 2025-3-26 18:10:32

Abhishek D. Garg,Patrizia Agostinisnew shooting mode, called .. We show that existing source identification methods are ineffective when images are acquired in .. We also show when and how it is possible to address this limitation by removing non unique artefacts introduced by the camera software.
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查看完整版本: Titlebook: Observing the Messier Objects with a Small Telescope; In the Footsteps of Philip Pugh Book 2012 Springer Science+Business Media, LLC 2012