Dear All
I had a go at obtaining a spectrum for this dwarf nova last night.
I measured it a V mag 7.6 and R mag 7.1 last night. This is about the limit for me to obtain a spectrum.
Taken with 300x11 sec exposures with occasional high cloud intervening.
It is only in the red and near IR region but clearly shows the Ha emission with little else.
A second attempt.
I took another spectrum last night and have superimposed it on the previous nights spectrum. There isn't much change but at least it shows that my technique is reasonably consistent.