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
PSN J01364816+1545310 in M74
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Re: PSN J01364816+1545310 in M74
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
(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