› Forums › Spectroscopy › Light pollution › light pollution
27 May 2017 at 3:02 pm
#578239
![](https://britastro.org/wp-content/uploads/2016/11/picture-146-1478110706-80x80.jpg)
Participant
Paul,
The relatively low level of the Na D line in your spectrum is interesting (The narrow band from LP sodium lighting still dominates in my spectrum) Is this not used in your area at all these days ?
Robin