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Technical line drawing of the EO-1 Advanced Land Imager instrument showing its internal optical components and housing structure. The cutaway view reveals the telescope assembly with mirrors, detector arrays, and electronic modules in a compact rectangular housing.

Enhanced Thematic Mapper Plus (ETM+) Diagram

Artist rendering of the Enhanced Thematic Mapper Plus (ETM+) instrument with cutaway view showing internal optical components and systems. This primary imaging instrument was carried aboard Landsat-7 to capture high-resolution multispectral imagery of Earth's surface.

Image Credit: NASA
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