color images

Nelson Caldwell (at the CfA) and I discussed making pretty three-color images from astronomical data, reminding me of some far-out ideas we had that go beyond our current, good, but simple system. In particular, because the brightest parts of the image make a saturated color map in our system, it can be that the brightest astronomical sources contain none of the brightest output image pixels. There are some good ideas floating around for maintaining the color information but still brightening the brightest pixels. Unfortunately, I can't see how to do it without adding new free parameters.

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