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Originally Posted by JayUtah
The coating on the aluminum casings will be more important than the properties of the aluminum itself. I don't know exactly what the coating is, but it has the look and feel of other coatings that are selective emitters and absorbers.
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I just read a text about the Hasselblad on the Lunar Surface Journal. It says the camera had a silver finish.
Some time ago, I asked why the camera used on Gemini 4 spacewalk were painted black. As that spacewalk lasted only some minutes, I think it really doesn't matter. But I read there were longer spacewalks in Gemini project that lasted several hours. I wonder if the cameras used there were still painted black. Do you know when they started to use the reflective ones?
(Thanks, Papageno. I'm reading the PDF now.)