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Title: | Thermal characteristics of a classical solar telescope primary mirror |
Authors: | Banyal, R. K Ravindra, B |
Keywords: | Solar telescope mirror Optical materials Thermal effects Finite element methods |
Issue Date: | Aug-2011 |
Publisher: | Elsevier B.V. |
Citation: | New Astronomy, Vol. 16, No. 5, pp. 328-336 |
Abstract: | We present a detailed thermal and structural analysis of a 2 m class solar telescope mirror which is subjected to a varying heat load at an observatory site. A 3-dimensional heat transfer model of the mirror takes into account the heating caused by a smooth and gradual increase of the solar flux during the day-time observations and cooling resulting from the exponentially decaying ambient temperature at night. The thermal and structural response of two competing materials for optical telescopes, namely Silicon Carbide – best known for excellent heat conductivity and Zerodur – preferred for its extremely low coefficient of thermal expansion, is investigated in detail. The insight gained from these simulations will provide a valuable input for devising an efficient and stable thermal control system for the primary mirror. |
Description: | Restricted Access |
URI: | http://hdl.handle.net/2248/5354 |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
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Thermal characteristics of a classical solar telescope primary mirror Restricted Access | Restricted Access | 987.98 kB | Adobe PDF | View/Open Request a copy |
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