spectro-aras.com

bad weather in Chile (Chile's worst weather time of year).
So no spectrum of this target....

And another spectrum taken last night always with an Alpy 600, 6 exposures of 1200s because the target is going fainter than yesterday. We can see that each peak splits into two. This the velocity graph of Balmer's lines https://i.postimg.cc/PrqdSS0H/AT-2024fjh-H-velocity-small.png Evolution of the ...

A spectrum taken last night by Pascal from our team 2SPOT with our Alpy 600 spectrograph in Chile : 4 exposures of 1200s. The target is near mag. V=14, so easy target with an Alpy 600 https://i.postimg.cc/4yKjngK8/Champ-AT-2024-fjh.png and the spectrum with all Balmer's lines in emission and double ...

Too faint for an eShel spectrum, but we can try with the Alpy 600.

New spectrum taken from Chile, this time with an Alpy 600. https://i.postimg.cc/28x2Z9J1/Graphe-AT-2024epj-small.png And comparison between the eShel sepctrum and the Alpy spectrum. (and evolution in 3 days) https://i.postimg.cc/hjSGfj7z/AT-2024-epj-3-days-evolution-small.png Evolution of H alpha li...

ATEL :
https://www.astronomerstelegram.org/?read=16545


and classification on TNS :
https://www.wis-tns.org/object/2024epj

Great Tom !!!

We will try next night with our Alpy 600....

Here's the spectrum taken last night from our 2SPOT eshel spectrograph from Chile. https://i.postimg.cc/GtGMHwwh/Champ-at-2024-epj.jpg Very noisy at magnitude around V=10 and too low for an echelle spectrograph and a RC 12'. https://i.postimg.cc/NjdLWK9B/AT-2024-epj-full-small.png the two narrow emi...

This morning, we tried to make a spectrum of the nova Oph 2024, but were unsuccessful due to its low magnitude. But here's the spectrum and the velocity measurement on the H Alpha line https://i.postimg.cc/zGw5dLCh/Nova-Oph-2024-graphe-Small.png https://i.postimg.cc/25VYCHpQ/Nova-Oph-2024-velocity-g...

our spectra #17 and #18 of this Nova. The evolution in 48 hours is no longer significant. Now, we'll produce just one spectrum every 3 days, as long as the magnitude allows us to follow the nova with the eshel spectrograph. https://i.postimg.cc/h4fyDhGB/V1723-Sco-evolution-48h-after-2-weeks-small.pn...