flux calibration unstable at the edges about pydis HOT 3 OPEN

Hm, I'm not sure I understand this either. Can you remind me what the last figure is showing? Is this an issue of extending the fit past the IRAF reference spectrum? This is a tricky issue, as it does try to smoothly extend it if needed.... which is dangerous!

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In the last figure the red dots are the standard flux from the IRAF library and the black line is the observed standard with applied sensitivity function. The IRAF reference spectrum starts at 3200 Å so I have tried to clip the observed spectrum at 3300 Å but still this problem is present at the edge. I was wondering if you have noticed something similar with other standard stars.

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I wonder if this would be fixed by #71...

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