3

The picture is a mocked-up fake and is not an actual picture of the solar spectrum. You can easily see this because the black "Fraunhofer lines" extend beyond the spectrum and H alpha should have an appreciable width. The table is massively incomplete. It list only a tiny fraction (the strongest) absorption lines in the solar spectrum. There are ...


3

I'm not a spectroscopist, but, I know a fair bit about spacecraft data reduction. CRISM is a spectrometer that's very sensitive, but it needs more light than it can get by just riding along with the spacecraft, so it slews in the reverse direction of motion (that's why CRISM images have that hourglass shape). Despite that, it STILL has some light issues ...


2

A source cannot coherently vary on timescales shorter than the source size divided by the speed of light. That is because there is no way that different points on the source could "communicate" with each other and arrange for a coordinated increase or decrease in brightness. Therefore the shortest timescale of variability gives an upper limit to ...


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