U13(CV8)

U13 is a very faint source. It is magnotude 24 in the red according to [Cool10]

Attend to find U31 in MUSE data cube Region 4.
Attend to find U31 in MUSE data cube Region 4.

H\(\alpha\)

Maybe split due to close by star, that is why for example U22 with a very sharp decrease and maybe cause the assymetry in many CVs.