PSN J01364816+1545310 in M74

[Paolo Berardi]

Hi Christian, excellent spectrum! The comparison shows difference especially in the blue part of the spectrum. I think Alpy 600 and Lisa are capable to better concentrate blue/UV light while Lhires 150 tends to vertically disperse it due to the doublet chromatic aberration.

Enjoy OHP workshop, please greet all friends there!

Paolo

[Christian Buil]

New spectrum of SN2013ej in Messier 74:



(T200 telescope + Alpy 600 - 4 x 600 s exposure).

The Halpha line is now evident. Notre large variatiion from my latest 31/07 observation.

http://www.astrosurf.com/buil/supernovae/2013/obs.htm

Christian