Hi,
I’m sure there was a thread that covered this but I can’t remember the title of it….
Anyway, a while back I noted that I had caught a few meteors with very particular characteristics. Michael also caught one and I have now captured yet another. The primary characteristics are a very strong sodium line and slow velocity (no O or N atmospheric lines in the red/near IR)
Definitely a specific class of meteoroid. This is a fairly raw spectrum. The meteor occurred early in the evening during nautical twilight and combined with the moon just outside of the FOV it was a decidedly non uniform background!
However the main features are clear.
This is one that would be nice to get an orbit for.
![](https://britastro.org/wp-content/uploads/2018/11/s20181118_173705.png)
I’ve deliberately left the long featureless red “tail” to illustrate the lack of features. Compare this to just about any other and you’ll see the usual atmospheric lines are missing.
![](https://britastro.org/wp-content/uploads/2018/11/s20181118_173705-s.jpg)
Mmmm, an intriguing…..
Cheers,
Bill.