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20 September 2020 A compact, lightweight and quasi-athermal Optical Bench for iSIM170
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The Integrated Standard Imager for Microsatellites (iSIM) is a new generation of high-resolution optical binocular imagers for Earth Observation satellites developed by SATLANTIS. It is the result of combining a compact and efficient optomechanical design, with the latest advances in electronics (both in detectors and processors), the use of commercialoff- the-shelf (COTS) components, and the incorporation of advanced manufacturing procedures. Through the use of cutting-edge technologies, the design of iSIM significantly reduces build & delivery times and provides a new level of affordability. iSIM-170 is the highest resolution optical payload of the iSIM family. The imager features a binocular camera with an aperture of 170mm offering multispectral capability (R, G, B, NIR, and PAN). At 500 km, iSIM-170 provides a spatial resolution of less than 1m over a swath width of 7.5km thanks to the implementation of superresolution algorithms based on Artificial Intelligence techniques. This spatial resolution is independent of the number of bands and is preserved while the satellite moves not only along but also across its orbit. The mass of iSIM-170 is less than 15kg (for more information please visit Based on the early optical prescription, IDOM performed a thorough optical tolerance analysis and conceived a compact, lightweight and quasi-athermal optical bench aimed at providing optimum stability during observation in orbit while coping with the demanding launching conditions. IDOM’s collaboration with SATLANTIS expanded to the fabrication and testing of the first qualification units and the design of the first electronics box.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gaizka Murga, Saul González, Ramón Campo, Amaia Zarraoa, Alberto Vizcargüenaga, Rafael Guzman, Aitor Conde, Stuart Davis, Luis Carlos Fernandez, Juan Tomas Hernani, Eider Ocerin, Javier Ojanguren, Iñigo Ojanguren, Eduardo Ugalde, Marta Massimiani, Marcos Ubierna, Marco Truglio, Andrea Peña, and Ernesto Sanchez-Blanco "A compact, lightweight and quasi-athermal Optical Bench for iSIM170", Proc. SPIE 11530, Sensors, Systems, and Next-Generation Satellites XXIV, 115300Y (20 September 2020);


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