Abstract
Optical design of a small reflecting telescope for use in a 3U CubeSat mission is reported in this study. A Ritchey- Chretien type telescope for earth observation techniques is adopted in this design. The primary mirror and secondary mirror are circular apertures with 75-mm and 15-mm in diameter. The effective focal length is 1050-mm operated at 480-km altitude. A commercial 658 × 492 CCD image sensor with a pixel size of 7.4-μm × 7.4-μm is applied, which capture a 2.23-km × 1.67-km swath area. The ground resolution is moderate to be 3.4-m for CubeSat application. The MTF is expected to be about 0.3 at camera Nyquist frequency at 67.6-lp/mm. The tolerance analysis is performed for further understanding on fabrication and assembly errors. This telescope shows a reasonable design to obtain a more detailed image with a CubeSat. These results will be used in space exploration with CubeSat missions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
