Pudendal-Nerve 发表于 2025-3-30 10:34:52
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https://doi.org/10.1007/978-3-030-36552-3bolic (or spherical) primary mirror to collect light and bring it to a focus. Since the light never passes through the glass mirror but only bounces off of its reflecting surface, the image has no spurious color. The mirror is located at the bottom of the telescope tube rather than at the top, so th巧办法 发表于 2025-3-30 22:16:01
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Pei-Chieh Ho,Haw-Kai Chang,Po-Yu Chenhese can be found in various issues of magazines such as . & . and . since a number of these same companies also offer telescopes, as will be seen in the next chapter.) Note that most of the suppliers included in this compilation do not actually manufacture the various glasses listed but have them mcochlea 发表于 2025-3-31 13:03:18
Pei-Chieh Ho,Haw-Kai Chang,Po-Yu Chen found in various issues of magazines such as . & . and .. (The ads in such periodicals are also a good way to keep up with new sources that appear on the market after this book has gone to press.) A majority of the companies in this compilation do not actually manufacture the instruments listed butArthr- 发表于 2025-3-31 16:16:13
Laxminarayan Das,P. K. Swain,S. K. Parhiof the instrument itself. An inexperienced observer may look at the planet Jupiter and perhaps detect its two major dark equatorial bands, while an experienced one will typically see more than a dozen belts and bands using the very same telescope at the same magnification. Again, a novice may glimps