In 1990, it took Voyager 1 three hours to warm up its cameras for the Family Portrait photo looking back at our solar system.
What was the temperature of the camera before the warm up, or at least the average spacecraft temperature at that time?
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1Voyager had several very different temperatures since it had an RTG and a few strategically placed isotopic heaters as well, so "average spacecraft temperature" might not be so meaningful. Different but related: How would the Voyagers finally die if allowed to transmit to the bitter end? and How cold are the Voyagers now? Colder than LOX? Colder than SOX? – uhoh Feb 20 '22 at 15:17
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and Did any of Voyagers' receivers' front ends take advantage of the "cold of space" to lower noise? (communications or radio/plasma science receivers) – uhoh Feb 20 '22 at 15:17