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DIFFERENTIAL PATH CONSIDERATIONS IN OPTICAL STELLAR INTERFEROMETRY

机译:光学星状干涉术中的差异路径注意事项

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A formulation of the differential-air-pat problem for a large-baseline optical interferometer is presented. Because air is a dispersive medium, each wavelength has a different optical path length. This can be corrected to a large extent if an extra piece of glass is placed in each arm of the interferometer. The problem then becomes analogous to the doublet-achromat design, in which, in this case, the air path takes the place of one piece of glass. Atmospheric refraction and field-of-view considerations also amount to a change in the differential paths within the interferometer. All three effects can therefore be considered to be aspects of the same problem. The focus of this work has been for a proposed array to be developed by the Center for High Angular Resolution Astronomy (CHARA Array), although the results are applicable to any optical array. [References: 10]
机译:提出了一种用于大基线光学干涉仪的差分空气拍拍问题的公式。因为空气是分散介质,所以每个波长都有不同的光程长度。如果在干涉仪的每个臂上都放一块玻璃,可以在很大程度上进行校正。然后问题变得类似于双重消色差设计,在这种情况下,在这种情况下,空气路径代替了一块玻璃。大气折射和视野方面的考虑也等于干涉仪内差分路径的变化。因此,所有这三种影响都可以视为同一问题的方面。这项工作的重点是由高角度分辨率天文学中心(CHARA Array)开发一个拟议的阵列,尽管其结果适用于任何光学阵列。 [参考:10]

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