# Tag Info

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The 1960s and 1970s were a period of rapid technological development, so it's not actually surprising that the relatively new field of electronic imaging advanced so far in that five-year period. Especially for spacecraft applications, where you have severe power and weight constraints and a harsh operating environment, compromises had to be made in quality -...

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It is not only the progress in imaging over that period. Voyager was a more ambitious and expensive mission in general. The mass of Pioneer 11 was 259 kg, while that of Voyager was 825.5. That extra mass included a proper camera with multiple lenses on a steerable platform. This is different from the Pioneer spacecraft, which were spin-stabilized. The ...

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The answer is that it does it by scanning. There are two SWAN instruments, each of which sees an area of $5^\circ \times 5^\circ$ at any one time: with a $25$-pixel sensor where each pixel is therefore one square degree. One of these instruments looks at the northern hemisphere, and the other the southern hemisphere, and both of them are scanned by ...

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