KEYWORDS: Mirror structures, Mirrors, Space telescopes, Modal analysis, Space mirrors, Solar telescopes, Finite element methods, Optics manufacturing, Phase modulation, Satellites
Primary mirror with Φ 1m and f 3.5m is the most important optical part in Space Solar Telescope (SST), which is
designed to make observations of transient and steady state solar hydrodynamic and magnetohydrodynamic processes
and is being researched and manufactured by National Astronomical Observatories. The primary mirror structure(PMS),
a crucial linker for the optical and other subsystems, includes primary mirror and its supporting frame. Therefore, this
part must satisfy the optical sufficient strength, stiffness, and thermal stability requirements under the space environment
and in the launching process. In this paper the primary mirror structure and its connection are described. The scheme of
modal analysis and experiment is built, according to the specific dynamic requirements of the primary mirror structure in
Space Solar Telescope. The dynamic response on the primary mirror structure is analyzed with MSC.NASTRAN
software. Comparing these results with mode parameters obtained from modal experiment analysis. Modal experiment
uses freely hanging primary mirror structure, simple input multi-output, and modal parameter identification through
CADA-X software. Both results provide evidences to develop this satellite design.
KEYWORDS: Mirrors, Space telescopes, Silicon carbide, Lightweight mirrors, Space mirrors, Solar telescopes, Distortion, Finite element methods, Optical tracking, Astronomy
To compensate the image motion caused by random atmospheric turbulence and mechanical vibration, a high
performance correlation tracker designed for the Space Solar Telescope (SST) has been realized in National
Astronomical Observatories. Correlation tracker is to stabilize the image and provide the stabilized objective to CCD.
The main optical telescope can obtain the highest spatial resolution and ensure the image processing. Tip-tilt mirror is the
crucial element of the correlation tracker. The lightweight mirror is to adapt to work normally with space using and
satisfy the space environmental requirement. Tip-tilt mirror's material is SiC. Confirming the appropriate joint with the
platform and supporting mode through Finite Element Method. Then calculating the surface shape quality value (RMS)
of the mirror effected by inertial load and temperature. The calculation results show that the tip-tilt mirror has enough
stiffness and intensity. The mirror's surface shape quality value can satisfy the optical requirement of the correlation
tracker system.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.