尊重
发表于 2025-3-23 11:16:28
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表两个
发表于 2025-3-23 15:58:14
Astronomy and Astrophysics Libraryhttp://image.papertrans.cn/r/image/824689.jpg
农学
发表于 2025-3-23 19:50:47
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套索
发表于 2025-3-23 23:10:40
978-3-662-30863-9Springer-Verlag Berlin Heidelberg 2004
偏见
发表于 2025-3-24 05:28:30
Reflecting Telescope Optics I978-3-540-76581-3Series ISSN 0941-7834 Series E-ISSN 2196-9698
nocturnal
发表于 2025-3-24 07:34:34
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FICE
发表于 2025-3-24 10:50:45
Textbook 2004Latest editionr and format corrections on 17 pages, a number of corrections or additions of substance could be incorporated. These included minor corrections to Figs. 1. 3 b) and 2. 8 and to the text of Fig. 5. 18. The most important change of all was probably the complete revision of the historical treatment of
ALTER
发表于 2025-3-24 15:17:54
Major telescopes from Lord Rosse to about 1980,were able, in spite of the limitation of secondary spectrum, to compete with or even excel reflectors with apertures up to 1.22 m (Herschel) was a measure of the two great weaknesses of the reflectors of the time: the poor efficiency through low reflectivity and the problems of mechanical manipulation in such sizes.
Obloquy
发表于 2025-3-24 22:00:09
Historical introduction,ny excellent accounts exist as chapters in more general works, in biographies or accounts of specific projects, but only a few books are devoted solely to the historical development. The works of King (1955) and Riekher (1957, 1990) are notable. The recent second edition of Riekher has b
不怕任性
发表于 2025-3-25 01:08:09
Field correctors and focal reducers or extenders,the field aberrations of the mirror system. If the mirror system does not correct the axial image at the focus in question (e.g. the prime focus of an RC telescope), the field corrector will also be required to achieve this. Normally, field correctors are substantially afocal, i.e. they only have a