sn2023eoc

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E Soubrouillard
Posts: 16
Joined: Tue Mar 29, 2022 8:42 am

sn2023eoc

Post by E Soubrouillard »

Hello,

sn 2023eoc appeared in the constellation of the dragon and taked with a Newton 0.3 m and Alpy 600.
When it was discovered on April 4, it had a magnitude of 17.4 (z=0.036). It is given for 16.3 today. Host galaxy is anonymous (possible CGCG275-028)
sn2023eoc_f.png
See the comparing spectrum with that obtained by the spectro mounted on the 2.4 m Chinese Lijiang telescope. Apart from a small anomaly on my spectrum around 5850-5900 A that could correspond to the band of blueshifted silicon, the profiles appears substantially similar.
comparaison sn2023eoc.png
Cheers
Emmanuel
Newton 300 f/4 - Alpy 600/200 - science cam Asi 533mm - autoguider cam Asi 174 - AP900
Juan Jose Pueyo
Posts: 21
Joined: Thu Nov 12, 2020 4:35 pm

Re: sn2023eoc

Post by Juan Jose Pueyo »

Hello Emmanuel,
I see that you use a Newton f/4 with the Alpy 600. Is it necessary to put an intermediate lens to correct the focal ratio?
Greetings.
Juan José
Juan José Pueyo
Azara Obs.
Azara (Huesca)
E Soubrouillard
Posts: 16
Joined: Tue Mar 29, 2022 8:42 am

Re: sn2023eoc

Post by E Soubrouillard »

Hi Juan José,

Input beam focal ratio of Alpy 600 is f/4. So, this spectrograph is fully suitable to work with a f/4 telescope and needs no additional optics that can introduce chromatism.

Regards

Emmanuel
Newton 300 f/4 - Alpy 600/200 - science cam Asi 533mm - autoguider cam Asi 174 - AP900
Juan Jose Pueyo
Posts: 21
Joined: Thu Nov 12, 2020 4:35 pm

Re: sn2023eoc

Post by Juan Jose Pueyo »

Perfect. Thanks a lot Emmanuel.
Juan José
Juan José Pueyo
Azara Obs.
Azara (Huesca)
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