Hi Marc,
Welcome to the BAA spectroscopy forum. It is great to see someone with your experience joining us.
As you will have seen from some of the earlier posts to the forum, several of our members have recently acquired low resolution spectrographs such as the Alpy and LISA. It would be helpful if you could explain whether, and how, such low resolution devices can make a useful contribution to the VV Cep campaign. The analysis Ernst has been describing clearly requires high resolution H-alpha observations. If low resolution observations are useful, I am sure some of us would contribute.
Regards,
David