lwz

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  • lwz
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    Hi, James

    Thanks a lot for your quick response in detail!

    Yes, the shifts in the sky lines are quite significant. Also the shifts are wavelength dependent and fiber dependent, which makes it not just a pure zero point shift. I planned to do a linear fit to get the wavelength dependence of the shifts, but I was worried since I only have those three sky lines.

    Do you feel that I need to check if it is really a zero point shift in the physical pixel? If you think so, how should I do that?

    Best,
    Weizhe

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