spectro-aras.com

AT2022bpq/Gaia22alz is an unusually slow possible nova in Vela
discovered on 2022-02-04 at mag 16.8 its spectrum has been evolving and now resembles a classical nova. It is now mag 13 so in range of our instruments
https://www.astronomerstelegram.org/?read=15355

Cheers
Robin

We will try it next night (but the weather is not good at this time, the only bad period in Chile to do observation, a period of 40 days during april and may).... The rest of the time, we have over 320 clear nights per year.

Le beau temps va revenir.
Mais ce temps maussade sur le Chili arrivait souvent où c'est un début du changement climatique ?

etienne bertrand wrote:Le beau temps va revenir.
Mais ce temps maussade sur le Chili arrivait souvent où c'est un début du changement climatique ?

Etienne,

Au Chili les mois d'avril et mai sont les moins bon de l'année. Le site chez Deep Sky Chile est donné pour plus de 320 nuits exploitables par an.

Et je suis en train d'observer en ce moment avec un ciel parfaitement dégagé :

I'm on the novae actually and the raw spectrum show P Cyg profil on each Balmer's lines



And the auto guiding field with the Novae, very bright target !!!

And the spectrum



For Pete and others southern observers : it could be interesting to take a spectrum each day....

Ok Olivier je comprends.
Super le spectre de la Nova.
J'espere ressortir le Lhires mais mon ciel est toutes les nuits nuageux depuis 1 ou 2 mois... c'est long...
Merci pour l'image du Chili on voit bien la voie lactée et les nuages de Magellan !

Another spectrum made automatically with a script made by Stéphane from ou Team with Prism software.

If the weather is fine the following days, we can produce a spectrum of this target every night. automatically and to the process automatically via our pipeline ARP (made by Matthieu)

Thanks for the tip team.

I was on holidays last week but managed to program my system to take 3 spectra while I was away - I only processed them this morning hence the delay. Apart from Sunday 8 May, the forecast looks poor for the next week - hopefully my data covers the period when the 2SPOT guys are clouded over and they can pick this up next week.

Here are my spectra from 3, 5 and 6 May 2022. Between 10 and 12 x 600s exposures each taken with the UVEX on CDK 12.5. R is around 1180. I don't see a lot of development over the week though the P Cygni profiles appear to be narrowing to my eye. I'll do some more homework on this and post separately.

Pete

Its a bit early to glean too much from the spectra taken to date. Apart from the Balmer lines, the most prominent lines I can discern are He I lines. Here is a subplot showing He I at 4921.9, 5015.7 and 5875.6.

There appears to be the start of a few Fe II emissions but given the noise, I can't be certain of that.

Consistent with ATel 15355, I don't detect any emissions of He II or C IV in the range of my instrument.

Pete