› Forums › Spectroscopy › Anomolous absorption line? › stumped
26 February 2021 at 11:05 pm
#583897
![](https://britastro.org/wp-content/uploads/2016/11/picture-146-1478110706-80x80.jpg)
Participant
Then I am stumped I am afraid. If it pops up again you could perhaps try moving the micrometer a touch to see if it moves with the spectrum and/or move the spectrum along the slit a bit to see if it is a localised defect
Robin