[Terry B]

I have not been able to use my L200 spectrograph due to a mechanical failure along with very crappy weather.
I have now fixed the spectrograph and installed the neon reference lamp. This makes measurement of the lines much easier.
I took 2 sets of exposures of eta Car a few nights ago. I calibrated the spectrum using about 10 lines of neon emission lines.
The result is interesting with very obvious emission lines.
I processed the 2 different areas of the spectrum and joined them together to create the spectrum below.
The very strong H alpha line is obvious but I'm not sure what the other 2 strong lines are.
If you look at the raw spectrum there are lots of fainit lines above and below the star spectrum. These are from the surrounding nebula.
If I ever get a clear night again I will have another go and use longer exposures. The total for this spectrum was 4x5 mins for the green end and 5x1 min for the red end.