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Extrapolation into the blue

› Forums › Spectroscopy › What wavelength error is acceptable with an Alpy? › Extrapolation into the blue

30 October 2018 at 4:13 pm #580143
Dr Andrew Smith
Participant

I had a play with Excel and fitted the data to different orders all were good fits but you can see the difference in the extrapolation into the blue. Order 1 fitted at R=0.9998 ,orders 2,3,4 fitted to R=1 the graphs are order 1,3,4. The blue line is the fitted data and red the extrapolation using the ISIS fit.

Regards Andrew