As most people know, the weather has been very crappy for the last 3 weeks. This has stopped me getting any follow up spectra of this SN.
On 5/3/13 I had a partly clear evening but with 20-30kt winds to make it difficult.
I achieved about 15 min of exposure only and even then the star was jumping all around the slit so only about 1/2 of the time was anything being registered. Despite this I obtained a noisy spectra. It shows some progression of the shape of the spectra.
See
http://users.northnet.com.au/~bohlse.../sn_2013aa.htm
Cheers
Terry