Thank you for your comments. I already contacted Prof. Hamann. I guess I will get some answer in the near future.
I found the list of stars which are missing here in this forum and by pure coincidence I have a spectrum of WR127. This is quite a faint fuzzy with mag. 10.2. The best SNR I got on the brightest emission line was 27 and that was with 10 median stacked images of 300s. I can easily go higher with the exposure time as my mount works quite well.
Next time when I am in the observatory I will do some trial with 600 second exposure time images maybe up to 1800 second to see if it improves.
Below you can see that Light pollution already makes itself visible at 300 second exposure images. This is WR 110 at mag 9.8
http://www.astroforo.net/astro/rspec/wo ... median.jpg
I will work on this in the next opportunities. The ony problem is that I do visit my observatory every 2-3 weeks and so I also depend of good weather consitions.
I regard to your writing about an informal website, like the link you posted, I think that for the moment I am by far to unexperienced
and do not know how to start this, but anybody who might be interested in taking it over, I will gladly give my spectra for being used for that project. Anyhow, I will take a closer look to that site and see how it is build up.
I have spectra of WR 110,111,113,123,127 and 134