FATAL
发表于 2025-3-26 23:02:19
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ostrish
发表于 2025-3-27 02:59:23
NATO Science Series II: Mathematics, Physics and Chemistryhttp://image.papertrans.cn/o/image/702753.jpg
油毡
发表于 2025-3-27 08:08:22
https://doi.org/10.1007/1-4020-3437-7Astrophysics; Augmented Reality; Continuous wave; LED; Laser; Performance; Redshift; astronomy; cosmology; gr
Glucocorticoids
发表于 2025-3-27 11:52:13
978-1-4020-3436-7Springer Science+Business Media B.V. 2005
plasma-cells
发表于 2025-3-27 16:40:12
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脊椎动物
发表于 2025-3-27 18:20:06
A BRIEF HISTORY OF ASTRONOMICAL TELESCOPES,A brief review of major milestones of the historical race to large telescopes is given, from the Galileo‘s refractor to the 4-6m class telescopes.
farewell
发表于 2025-3-28 01:03:16
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Eclampsia
发表于 2025-3-28 05:13:22
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似少年
发表于 2025-3-28 08:09:13
SPECTROSCOPY,The basic principles of astronomical spectroscopy are introduced and the main types of dispersing element surveyed. The principles behind two modern spectroscopic techniques, multiple object and integral field spectroscopy, are also discussed.
Malfunction
发表于 2025-3-28 11:16:08
LASER GUIDE STARS: PRINCIPLE, CONE EFFECT AND TILT MEASUREMENT,We explain the laser guide star concept and why we do need laser guide stars (LGS) to greatly enhance adaptive optics performances at large telescopes. Then we discuss the two physical limitations of LGS, which are the cone effect and the indetermination of the tilt of the incoming wavefront. Solutions to overcome them are explained.