I’ll ask Ernst if a Pro-Am is foreseen or will be activated on VV Cephei.
Concerning the info links: strange those links do not work. Hope these attachments can help you.
Concerning the dispersion (the graph is a screenshot of BASS version 1.9.7) it was indicated within the BASS project software. Measurements by BASS gave for example in the red region: R= 11949@6571 Å, which was sufficient enough.
Initially without the 2x binning/zooming function the dispersion was in fact 0.17 Å/px which gives a more realistic dispersion for a LHIRES III 2400 L/mm with a slit of 35 µm and a 15 MP Canon Debayered DSLR with pixel pitch 4.69 microns.
So the original dispersion is 0.17 Å/px and the 2x zoom/binning 0.33 Å/px.