CRAMP
发表于 2025-3-28 17:00:00
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LUDE
发表于 2025-3-28 19:08:51
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Nmda-Receptor
发表于 2025-3-28 23:11:27
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发酵
发表于 2025-3-29 06:15:35
Core and Halo Star Images Formed by Large Telescopes,s, cores dominate the images at near-IR and longer wavelengths. In the other regime, ., halos instead dominate the images; in average seeing conditions images at visible wavelengths usually appear as halos. Halo shape closely replicates the shape of seeing-disc images often formed by large telescope
Coronation
发表于 2025-3-29 08:13:23
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FEAT
发表于 2025-3-29 14:11:08
Star Image Dependence on Turbulence Structure Size,lence structure functions. To illustrate the crucial importance of average turbulence structure size on star image appearance, two wavefront realizations are generated, one where the outer scale is less than one meter, the other where the outer scale is three times larger. Instantaneous images are t
取消
发表于 2025-3-29 18:03:14
Approximation of Star Images Formed by Large Telescopes,ing these images are, for most people, unfriendly and unwelcome. In this chapter, therefore, we greatly simplify the mathematics by approximating star images by best-fitting Gaussians functions. A single Gaussian function is used to approximate core-only or halo-only images; two summed Gaussian func
Flounder
发表于 2025-3-29 21:50:24
Telescope Resolution and Optical Tolerance Specifications,x tolerances can be adopted if halo-only images are considered adequate; tighter tolerances are required to exploit the much higher resolution levels provided by image cores. Telescope resolution is measured by the instrument’s ability to resolve binary stars. The Rayleigh resolution criterion emplo
Defiance
发表于 2025-3-30 01:03:13
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省略
发表于 2025-3-30 05:40:58
Laser Beam Propagation and Path Characterization, Laser (HEL) weapon systems. Laser beams that converge through the atmosphere as well as collimated beams are considered. With terrestrial laser communication systems, laser beam quality is influenced by atmospheric turbulence and the aberrations of the beam-projection telescope. For HEL beams, othe