dc.contributor.author |
Banyal, R. K |
|
dc.contributor.author |
Ravindra, B |
|
dc.date.accessioned |
2011-02-24T10:42:08Z |
|
dc.date.available |
2011-02-24T10:42:08Z |
|
dc.date.issued |
2011-08 |
|
dc.identifier.citation |
New Astronomy, Vol. 16, No. 5, pp. 328-336 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/5354 |
|
dc.description |
Restricted Access |
en |
dc.description.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. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Elsevier B.V. |
en |
dc.relation.uri |
http://dx.doi.org/10.1016/j.newast.2011.01.003 |
|
dc.rights |
© Elsevier B.V. |
en |
dc.subject |
Solar telescope mirror |
en |
dc.subject |
Optical materials |
en |
dc.subject |
Thermal effects |
en |
dc.subject |
Finite element methods |
en |
dc.title |
Thermal characteristics of a classical solar telescope primary mirror |
en |
dc.type |
Article |
en |