Why Is Spitzer Painted Black?
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cooooooool i like these videos
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thxs
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whic one is better spitzer or hubble telescope
hector9462 3 years ago
Well, I think Spitzer is better, because it pays my salary. :) But, seriously, neither is "better" or "worse." They're just different, and can do different things. For some research, Hubble is better, and for other research, Spitzer is better.
SpitzerJim 3 years ago
Can it not only be for the telescope to cool down?
I have thought about thermal expansion where the construction of Spitzer is tuned for a typical temperature in space. If sun heat changes the overall manufactured dimension of the telescope because of uneven temperature distribution, then would its precision (or something else i don't know) be altered?
I'm sure the engineers designing it have thought even more about that. It's got to be more complex. Isn't it?
lepape2 3 years ago
I wasn't privy to the design process (I was in grade school when it started) but, yeah, I'm sure they had to take thermal expansion into account. Wouldn't have had much to do with the paint scheme, though. I'm sure it was part of why the cold assembly is physically separated from the solar panels and spacecraft bus, though.
SpitzerJim 3 years ago
What I don't understand is if black radiates heat faster as well as absorbs it, wouldn't the two cancel each other out?
demonknight66698 3 years ago
If the black side ever pointed toward the Sun, it would heat up faster than the reflective surface. But whether it heats up and cools down quickly or slowly doesn't have much affect on how hot or cold it can get overall, just the time it takes to get there.
SpitzerJim 3 years ago