spectro-aras.com

Thanks Terry!

A special page concerning sn2012fr is now open in ARAS site:

http://www.astrosurf.com/aras/surveys/s ... fr/obs.htm

(Bernard, remenber to send your important SN spectra - actual and future!)

Christian B

The SN2012fr page is updated with Robin H. observation (Oct. 29):

http://www.astrosurf.com/aras/surveys/s ... fr/obs.htm

and also my very latest observation from France (moon light is less agressive and
the sn magnitude is now more favorable) - last night:



(Celestron 9 + LISA (35 microns slit) + Atik460EX CCD camera + one hour exposure)

The profile aspect change quickly (compare with Terry Nov. 4 observation).

Christian B

Last night, 10 November, was my first chance to get a follow-up spectra of this SN, which apparently is close to its peak. The Type 1a profile is now very clearly defined ... GELATO gives a 100% match.

Cheers, Bernard

Bernard, your latest high signal to noise ratio spectrum is now added to the global compilation:

http://www.astrosurf.com/aras/surveys/s ... fr/obs.htm

Christian B

This Type Ia SN continues to evolve, with increasingly stronger MgII, FeII,SII and SiII absorption, as seen in my 13 Nov spectra. Note that I've shifted my coverage towards the red.

Cheers, Bernard

Fine Bernard !
The SN spectrum aspect change now very quicky.

Your spectrum is added in the database, and also an excellent LISA spectrum
from Terry (Nov. 1146):

http://www.astrosurf.com/aras/surveys/s ... fr/obs.htm

Christian B

More from me as well.
This is from 15th. Nov

Terry

Terry, I have observed at nearly the same time from France (Nov 15.9). Here a comparison of the two spectra:



Note the very high similarity

The ARAS page is updated

Christian

My update from last night (18 November) of this bright NGC1365 supernova:

Cheers, Bernard

I also took a spectra last night. There was no wind to make guiding difficult for the first time since I have taken images of this star. The result was a better SN.
Terry