PSN J01364816+1545310 in M74

Information about outbursts of eruptive stars, Be activity, ...
Paolo Berardi
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Joined: Thu Sep 29, 2011 10:51 pm

Re: PSN J01364816+1545310 in M74

Post by 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! :D

Paolo
Christian Buil
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Joined: Mon Sep 26, 2011 6:59 pm
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Re: PSN J01364816+1545310 in M74

Post by Christian Buil »

New spectrum of SN2013ej in Messier 74:

Image

(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
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