› Forums › Spectroscopy › What wavelength error is acceptable with an Alpy? › 3 A error
31 October 2018 at 2:01 pm
#580153
Dr Andrew Smith
Participant
Simple answer is I don’t know.
Can you process a calibration frame as if it were a star? Rename it so ISIS is not confused. Are the lines in the right place?
If they are then I can only think it is the fact that the calibration light is not illuminating the spectrograph in the same way as the star.
If the are not then it may be other issues like undersampling.
Regards Andrew