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Our 2SPOT team continues to follow this nova from Chile with an eShel spectrograph (R=11000).

Here's the evolution of this nova on the H Alpha line with the 21 spectra we've made to date

https://i.postimg.cc/BvhwSn6R/Nova-Lup-2025-Ha-evolution-20-spectres-s.png

the evolution of the Iron lines ...

A fast change in the profil of this Nova in less than 24h




And an Atel :

https://www.astronomerstelegram.org/?read=17256

Evolution of this nova in 7 days on H Alpha line



and an animation with our spectra

Here's a spectrum of this Novae taken this morning from our 2SPOT setup in Chile and an eShel spectrograph (R=11000) 5 X 1200s.

The raw spectrum of one exposure

https://i.postimg.cc/3RvP9DT7/Spectre-AT-2025nlr.jpg

The full graph from 3900 to 7600 Å

https://i.postimg.cc/3RBBFKc9/Nova-Lup-2025 ...

We've been making about ten spectra a night from our installation in Chile, and we've noticed the following changes in our latest spectra:

1) End of HD93442's outburst between January and May 2025.

https://i.postimg.cc/TYyNzBVG/Graphe-fin-outburst-HD93442s.png



2) Significant evolution of the ...

Thank you Tom for your message.
The good thing is that this technique can be adapted to any type of star, you just need to set the right parameters at the start and of course confirm the candidates with a spectrum.

Our 2 SPOT team discovered 33 new Wolf Rayet-type stars by examining the GAIA data for potential candidates, then confirming them by producing a spectrum.

Lionel from our 2SPOT team carried out most of this work, with the invaluable collaboration of Jaroslav Merc from Charles University in Prague ...

A spectrum of Y Gem taken in automatic mode from our eShel setup in Chili

We have observed 3 outbursts of Be Star's since 20th november from our eShel spectrographe in full automatic mode from Chile (observation and spectra reduction).

https://i.postimg.cc/HxptzLDy/HD-49888-Outburst-small.png

https://i.postimg.cc/mZpS3RdP/HD-46484-outburst-small.png

https://i ...

We were able to make 5 spectra of this nova, but it became too faint to have a spectrum.

The magnitudes given are those obtained from the AAVSO in V and CV bands