Inveigle 发表于 2025-3-21 18:24:33

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alleviate 发表于 2025-3-21 20:21:21

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香料 发表于 2025-3-22 03:40:33

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邪恶的你 发表于 2025-3-22 05:02:33

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Intend 发表于 2025-3-22 11:28:20

Equipment for Observing the sun,e precautions required for using electricity in damp conditions, and being aware of the dangers that the unseen tree-branch can pose. However, if there is one field of observation where caution is always necessary, it is in the field of solar observation. Looking at the Sun through any telescope, wi

Palter 发表于 2025-3-22 15:03:26

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Ingenuity 发表于 2025-3-22 19:27:27

Eyepieces, you get with that?”. Photographs of the Moon produce the same response. If I’m in a picky mood, my unhelpful response might be, “Well… that crater is about sixty miles across and it’s only an inch across on the print, so it’s a . and not a magnification”

Biomarker 发表于 2025-3-22 21:21:48

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Ornament 发表于 2025-3-23 03:32:43

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Exclude 发表于 2025-3-23 06:36:17

Beiträge zur Graphischen Datenverarbeitungdetermined by the number and size of light-sensitive elements contained along the length and the width of the device. These light-sensitive elements are actually Metal-Oxide-Semiconductor (MOS) capacitors which are transparent to light. In an amateur CCD camera there are, typically, a few hundred MO
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查看完整版本: Titlebook: Astronomical Equipment for Amateurs; Martin Mobberley Book 1999 Springer-Verlag London 1999 Astrometry.CCD.Observatories.astronomy.instrum