Shuttle Columbia STS-107 Message Board

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Pastimes : Shuttle Columbia STS-107

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To: Bill Jackson who wrote (528)	2/14/2003 3:40:41 PM
From: ownstock	Read Replies (1) of 627

Bill: You are sort of correct about the plasma, it might have been an issue. The light output of the plasma is atomic (mainly O2 and N2 (both red)lines) and thermal (blackbody) overlayed. But it is pretty thin optically, and becomes trivial depending on the speed / time / altitude. At 40-50 miles, the plasma is not very visible; the tiles have absorbed a lot of heat and are "glowing" brightly. A multi-spectral image in the near to mid IR would be able to show the temperature profile. If there was a hot spot on one side or the other, you would only need a few pixels of data. I would be very surprized if the data did not exist. -Own

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