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What is adaptive opticsused for

The model for the refractive index, nD (λ = 589 nm), at room temperature is currently being updated for several weeks, possibly until March 2008. In the meantime, the following diagram and experimental data (110 kB) may be used for orientation. Please check back at a later time for more detailed information. The spider-graph below shows the influences of selected glass component additions on the elastic modulus of a specific base glass, while keeping the molar ratios of all remaining components constant. The spider-graph will be different for other base glass compositions.

According to Figure 2 a relatively high refractive index and low density can be obtained with glasses containing light metal oxides such as Li2O and MgO, while the opposite trend is obtained with glasses containing PbO and BaO.

What is adaptive opticsexamples

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‘This new and expanded edition of what has become an established classic in the range of books on optics is most welcome … provides a much needed reference work … treatment of the subject is thorough and the reader is provided with an excellent review of a topic that has great relevance for the future of astronomy … thoroughly recommended to all who have an interest in the design of optical systems for remote viewing.’

What is adaptive opticsin astronomy

An interesting relation exists between the refractive indices of glasses and their densities. This relation is certainly not always linear for all glass compositions. Figure 2 shows a typical diagram that can be obtained when calculating the densities (see density model) for experimental refractive index data, or when calculating the refractive indices for the experimental density data.

Adaptive optics is a powerful new technique used to sharpen telescope images blurred by the Earth's atmosphere. This authoritative book is the first dedicated to the use of adaptive optics in astronomy. Mainly developed for defence applications, the technique of adaptive optics has only recently been introduced in astronomy. Already it has allowed ground-based telescopes to produce images with sharpness rivalling those from the Hubble Space Telescope. The technique is expected to revolutionise the future of ground-based optical astronomy. Written by an international team of experts who have pioneered the development of the field, this timely volume provides both a rigorous introduction to the technique and a comprehensive review of current and future systems. It is set to become the standard reference for graduate students, researchers and optical engineers in astronomy and other areas of science where adaptive optics is finding exciting new applications.

Figure 1: Influences of selected glass component additions on the refractive index of a specific base glass (click image to enlarge)

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