Technology

Development of New Technology

7. Development of New Technology
The science of in advance(p) astronomy is closely tied to technological innovation. On the superstar hand, the desire of astronomers to better understand the universe intimately us causes them to continually push for more sensitive detectors, higher ghostly resolution, and greater angular resolution. On the other hand, technological advances frequently bring new and unexpected opportunities for astronomical research; the increment of intercommunicate astronomy from the radar technology developed during the turn World War is an example. The LMT is in the forefront of this tradition. In swan for the telescope to reach the desired speci?cations, innovative technological solutions atomic number 18 required; and, in order to solve the astronomical questions represent in previous chapters, instrumentation with unprecedented sensitivity mustiness Figure 7.1 Artists conception of the LMT. be developed. 7.1 combat-ready Surface System For any telescope, it is essential that the ?gure (precision shape) of the optics be maintained. Because the native re?ector is the largest component in the system, it presents the greatest dif?culty. The challenge arises out-of-pocket to gravitational, thermal, and wind-induced de?ections of the telescope structure.



In order to provide good visual doing, these distortions must be kept to a small piece (typically 1/20th or smaller) of the wavelength to be observed. For the LMT, this implies a respectable(a) error budget of 75 microns RMS, of which the primary re?ector accounts for almost 55 microns RMS (that is, the average deviation from a perfect near must be less than 55 millionths of a meter, about the diameter of a human hair!). 7.1.1 Correction of gravitative Errors Generally, the largest source of error in the surface ?gure is the de?ection of the support structure as it changes its orientation with respect to gravity. The earliest attempts at radio telescope design sought to achieve the necessary performance by designing a...If you want to get a full essay, order it on our website: Orderessay



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