Al,
That is an excellent result, and it also supports my earlier results. I'm glad you went for the longer exposures
While it isn't possible to do a correct profile comparison of our spectra, as mine wasn't corrected for instrumental response (was yours?), it is interesting to note that the H alpha / H beta amplitude ratio has decreased in the last few days ... which I interpret to mean that the source (envelope) has cooled a bit.
The clouds cleared here earlier on ... the first night in over a week, and the night i had to be out to dinner ... good old sod's law.