work for others

I worked entirely for others today. I made jpeg images from individual SDSS fields for Lang, who is asking whether he can understand the bandpasses and photometric zeropoints of arbitrary astronomical images. This involved writing some code, because my generic SDSS jpeg code mosaics together multiple fields onto an exact tangent-plane coordinate system, but Lang wanted distorted real fields.

I re-worked one of Zolotov's plots of the accretion histories of stars in different kinematic components as a function of height above the disk to this:

In a later post I will say what the plot means; right now I am just trying to make it look good.

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