| Автор | Blake, R. P. |
| Автор | Jones, B. W. |
| Дата выпуска | 1996 |
| dc.description | Space‐based infrared telescopes will be of great importance in the search for extrasolar planets, and in their subsequent investigation. Such telescopes benefit enormously from radiative cooling. We have investigated this cooling with the aid of a Monte‐Carlo model of a cylindrical telescope tube shielded from the Sun by two flat plates. Our primary concern has been to establish to what extent radiative exchanges have to be modeled more accurately than has been the case up to now. We have shown that the equilibrium temperatures depend significantly on the directionality of the radiative properties of the materials coating the tube and shields. Also significant is the polarization of the radiation exchanged between the tube and shields, the change of radiative properties with wavelength and temperature, and the spacing between the shields and tube. There is a need for further measurements of infrared radiative properties at cryogenic temperatures, and we are planning to make some. |
| Формат | application.pdf |
| Копирайт | Copyright 1996 by the American Geophysical Union. |
| Тема | Detection of Extrasolar Planets |
| Тема | Detection of Extrasolar Planets |
| Тема | PLANETARY SCIENCES: SOLID SURFACE PLANETS |
| Тема | Planetology: Solid Surface Planets: Instruments and techniques |
| Тема | PLANETARY SCIENCES: FLUID PLANETS |
| Тема | Planetology: Fluid Planets: Instruments and techniques |
| Тема | PLANETARY SCIENCES: COMETS AND SMALL BODIES |
| Тема | Planetology: Comets and Small Bodies: Instruments and techniques |
| Тема | GENERAL OR MISCELLANEOUS |
| Тема | Instruments useful in three or more fields |
| Название | Low‐temperature space observatories: The effect of realistic surface properties |
| Тип | article |
| DOI | 10.1029/96JE00499 |
| Electronic ISSN | 2156-2202 |
| Print ISSN | 0148-0227 |
| Журнал | Journal of Geophysical Research: Planets |
| Том | 101 |
| Первая страница | 9303 |
| Последняя страница | 9308 |
| Выпуск | E4 |
| Библиографическая ссылка | Hawarden, T. G., R. O.Cummings, C. M.Telesco, H. A.Thronson, Optimised radiative cooling of infrared space telescopes and applications to possible missions, Space Sci. Rev., 61, 113–144, 1992. |
| Библиографическая ссылка | Ordal, M. A., L. L.Long, R. J.Bell, S. E.Bell, R. R.Bell, R. W.AlexanderJr., C. A.Ward, Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infrared, Appl. Opt., 22, 1099–1119, 1983. |
| Библиографическая ссылка | Siegel, R., J. R.Howell, Thermal Radiation Heat Transfer3rd ed.Chaps. 3–5, 11, Hemisphere, Washington, D.C., 1992. |
| Библиографическая ссылка | Thronson, H. A., J. K.Davies, J.Hackwell, T. G.Hawarden, R. F.Knacke, D.Lester, C. M.Mountain, Edison: The next generation infrared space observatory, Space Sci. Rev., 61, 145–169, 1992. |
