A comparative study of the thermal performance of primary mirror at the four typical sites
Sign Up to like & getrecommendations! Published in 2018 at "Optik"
DOI: 10.1016/j.ijleo.2018.05.008
Abstract: Abstract We propose a heat dissipation model to assess whether the material and thickness of the primary mirror of a telescope design exceed the upper constraint of the requirement in terms of the four typical… read more here.
Keywords: thermal performance; four typical; primary mirror; typical sites ... See more keywords
Simulation and analysis of co-phasing errors of the segmented primary mirror tiled by hexagonal segments in LOT
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/10/245
Abstract: In this paper, co-phasing errors of a segmented primary mirror tiled by hexagonal segments are successfully calculated for the 12-meter Large aperture Optical/infrared Telescope (LOT). Co-phasing errors including out-of-plane errors are simulated separately and comprehensively… read more here.
Keywords: phasing errors; primary mirror; lot; simulation ... See more keywords
An Annulus-Sector Segmented Primary Mirror
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2750705
Abstract: Ultrahigh resolution optical imaging with large aperture is increasingly desired in space-based remote sensing and imaging system, but it is usually limited by volume and mass constraints of launch vehicle due to size and weight… read more here.
Keywords: annulus sector; primary mirror; sector; system ... See more keywords
Noncontact temperature estimation method on the actively cooled primary mirror surface of large ground-based solar telescope
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Astronomical Telescopes, Instruments, and Systems"
DOI: 10.1117/1.jatis.3.4.046001
Abstract: Abstract. To control the mirror seeing effect and the thermal deformation, the actively cooled primary mirror is utilized in a large ground-based solar telescope. Due to direct solar illumination and high reflectivity of the mirror… read more here.
Keywords: solar telescope; mirror surface; cooled primary; primary mirror ... See more keywords
Primary mirror segmentation for large optical telescopes: an inverse map projection approach.
Sign Up to like & getrecommendations! Published in 2021 at "Applied optics"
DOI: 10.1364/ao.433398
Abstract: Large segmented-mirror telescopes are powerful tools used in modern astronomy. Segmentation of the primary mirror is important for support design, mirror fabrication, and construction cost reduction. A curvature study showed that a primary mirror with… read more here.
Keywords: mirror segmentation; primary mirror; mirror; map projection ... See more keywords
Design and optimization of the tripod flexure for a 2m lightweight mirror for space application.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.476783
Abstract: In order to ensure optimal optical performance, primary mirror assembly must be impervious to environmental influences. These environmental influences include gravity, assembly error, and thermal change, under which external loads are imposed on the mirror.… read more here.
Keywords: tripod flexure; optimization; mirror; primary mirror ... See more keywords
Surface figure compensation of the primary mirror in a Ritchey-Chrétien space telescope by spring preloads.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.477606
Abstract: To reduce the surface figure error induced by mechanical strains during the integration process of a high-precision mirror, a cost-efficient compensation method by spring preloads is proposed. The study is based on the primary mirror… read more here.
Keywords: mirror; primary mirror; compensation; surface figure ... See more keywords
Thermal control analysis of a primary mirror for large-aperture telescope
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Korean Physical Society"
DOI: 10.3938/jkps.71.28
Abstract: Extraneous thermal loads on the primary mirror of a large-aperture telescope directly influence the optical performance of the telescope through temperature gradients within the mirror and thermal boundary layer at the face sheet. In this… read more here.
Keywords: thermal control; aperture; telescope; primary mirror ... See more keywords