Design and Testing of a Dual-Camera Payload for ESEO
- Paper number
IAC-16,B4,4,3,x31978
- Coauthor
Mr. Indrek Sünter, Tartu Observatory, Estonia
- Coauthor
Mr. Henri Kuuste, Tartu Observatory, Estonia
- Coauthor
Mr. Allan Kustavus, University of Tartu, Estonia
- Coauthor
Mr. Ants Agu, Estonian University of Life Sciences, Estonia
- Coauthor
Mr. Erik Ilbis, University of Tartu, Estonia
- Coauthor
Mr. Georgi Olentšenko, Tartu Observatory, Estonia
- Coauthor
Mr. Indrek Ploom, University of Tartu, Estonia
- Coauthor
Mr. Jaanus Kalde, University of Tartu, Estonia
- Coauthor
Mr. Jacob Luis López Seco, University of Vigo, Spain
- Coauthor
Mr. Johan Kütt, Tartu Observatory, Estonia
- Coauthor
Ms. Karoli Kahn, University of Tartu, Estonia
- Coauthor
Mr. Paul Liias, Radius Space, Estonia
- Coauthor
Dr. Riho Vendt, Tartu Observatory, Estonia
- Coauthor
Mr. Samu-Pekka Ojanen, Tampere University of Technology, Finland
- Coauthor
Mr. Sharad Chopra, University of Petroleum and Energy Studies, India
- Coauthor
Mr. Silver Lätt, Tartu Observatory, Estonia
- Coauthor
Mr. Sriram Hariharan, Luleå University of Technology, Sweden
- Coauthor
Mr. Tõnis Eenmäe, Tartu Observatory, Estonia
- Coauthor
Mr. Urmas Kvell, Tartu Observatory, Estonia
- Coauthor
Mr. Viljo Allik, Tartu Observatory, Estonia
- Coauthor
Dr. Andris Slavinskis, Tartu Observatory, Estonia
- Coauthor
Dr. Mart Noorma, University of Tartu, Estonia
- Year
2016
- Abstract
Since 2012, European Space Agency (ESA), SITAEL and ten European universities have been developing the European Student Earth Orbiter (ESEO). The satellite bus is being designed, built and tested by SITAEL, whereas the payload modules are being developed by various universities throughout Europe. ESEO is a microsatellite to measure the radiation environment in Low Earth Orbit (LEO), test new technologies in space as well as take photos of Earth and other celestial bodies. The aim of the ESEO optical payload is to produce color images in the visible spectrum, mainly for public outreach purposes. Although, in addition to public outreach, the payload can also be used to monitor plankton blooms or changes in the polar ice caps. This paper presents the design, development and pre-launch testing of a lightweight and power-efficient dual-camera system for ESEO. The two-camera solution enables imaging of the same target with a different field of view. The wide angle camera provides context for telescopic images, making it easier to pinpoint the area that was photographed. The primary camera of the payload is a wide-angle camera based on the ESTCube-1 design with a $4.4~\mathrm{mm}$ telecentric lens, VGA CMOS color sensor and a $700~\mathrm{nm}$ IR cut-off filter. With a field of view of $46^{\circ} \times 35^{\circ}$, the ground resolution of the primary camera is around 1 km per pixel. The secondary camera is telescopic, has a Zeiss C Sonnar T* 1.5/50 lens, a $2592 \times 1944$ pixel CMOS color sensor and a Schott BG40 filter. With a field of view of $6.63^{\circ} \times 5^{\circ}$, the ground resolution of the secondary camera is about $20~\mathrm{m}$ per pixel. The payload features configurable internal image processing, progressive image compression and non-volatile storage. The resulting payload weighs about $800~\mathrm{g}$, on average consumes less than $560~\mathrm{mW}$ of power, with peaks up to $1.5~\mathrm{W}$. The payload is currently being tested and will be launched on ESEO at the end of 2016.- Abstract document
- Manuscript document
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