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August 23-24, 2018 | Paris, France
Laser, Optics and Photonics
International Conference on
Journal of Materials Science and Nanotechnology | Volume: 2
Optical telescope for micro satellite: Design and analysis
Ching Wei Chen
and
Chia Ray Chen
National Space Organization, Taiwan
O
ptical design of a reflecting telescope for use in a
micro-satellite mission is reported in this study. A
Cassegrain type telescope for earth observation techniques
is adopted in this design. The primary and secondary
mirror are circular clear apertures with 380mm and
144mm in diameter. The effective focal length is 2525mm
operated at 561km altitude. A commercial 5120 × 5120
CMOS image sensor with a pixel size of 4.5μm × 4.5μm is
applied, which capture a corresponding 5km × 5km swath
area. The ground resolution is moderate to be 1m and 2m
for PAN and MS applications. The MTF is expected to be
about 0.3 at camera Nyquist frequency at 111lp/mm. The
tolerance analysis is performed for further understanding
on fabrication and assembly errors. The defocus and LOS
equations are also evaluated in this study. These analytical
results are the important reference in micro-satellite mission
for self-reliant space technology development in Taiwan.
Speaker Biography
Ching Wei Chen has received his Ph.D. in electro-optical engineering from the National
Chiao Tung University, Taiwan in 2008. He is currently an associate researcher with the
National Space Organization (NSPO), Taiwan. His current research interests include
optical design, optical testing, space technology, ultrafast optics and terahertz photonics.
e:
cwchen@narlabs.org.twNotes: