Imaging with insolated mirrors

Details Imaging with insolated mirrors Imaging with insolated mirrors

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005basi...33..265v&link_type=abstract

Bulletin of the Astronomical Society of India, vol. 33, Issue 3, p.265

Astronomy and Astrophysics

Astronomy

Sun, Solar Telescopes, Mirror Seeing, Thermal Distortion Of Mirrors

Scientific paper

Modern solar telescope designs are different from the conven- tional concept of vacuum telescopes. These new designs are "open" telescopes which try to minimize the temperature difference between various parts of the telescope and the ambient air. In this paper, we address a few issues related to the thermal response and image quality of such insolated mirrors. We estimate the distortion produced by thermal and material inhomogeneities and present limiting values of allowable temperature differences and percentage change of expansion coefficients for different aperture diameters, for typical materials under best possible seeing conditions. We predict the evolution of surface temperature of an insolated mirror using a simplified theoretical approach and show that it is compatible with the experimental values to a large extent. The results indicate the possibility of avoiding active cooling of the mirror surfaces, at least for primary mirrors with aperture diameter less than or equal to 50 cm.

Affiliated with

Also associated with

No associations

Rating

Imaging with insolated mirrors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Imaging with insolated mirrors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging with insolated mirrors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1302186