spectro-aras.com

CX Dra spectrum change every day. According to the following publication, the period of this Be star is 6.696 days:
https://arxiv.org/abs/1601.00218
And by studying more than 100 spectra of the BESS database there seems to be another longer period between 340 and 415 days.

For the short period, it would be useful to obtain a spectrum per day, see more to determine the changes from one spectrum to another.

So your high resolution spectra (R > 5000) are welcome. You can upload your spectra in Bess :
http://basebe.obspm.fr/basebe/

Here's the evolution of CX Dra between October 3rd and today.

As well as the observers and their contributions.

Thank you to all of you

Merci Olivier pour ton travail. C'est une étoile intéressante, je vais la suivre aussi dès que je peux.
Pour l'instant la météo est vraiment pas top dans le Sud Ouest !