spectro-aras.com

ATel describing the first spectra: https://www.astronomerstelegram.org/?read=15858 ARAS Optical spectroscopy of GK Per in its current dwarf nova-like outburst ATel #15858; S. N. Shore (Univ. of Pisa), F. Teyssier, J. Guarro Flo, F. Sims, V. Bouttard (ARAS Eruptive Stars group) on 14 Jan 2023; 16:41 ...

Nice results! Note: the period is very close to 2 days. Thus any comparison of the spectra should take in account the orbital phase. Currently ~ 0.25 and ~0.75 (Alvarez-Hernandez+ (2021, MNRAS, 507, 5805) Photometry: Flickering is high (truncated accretion disk + hot spot and accretion near the magn...

An excellent tool for preparing observations:

https://airmass.org/

François-Mathieu

The semi-polar [1] cataclysmic star GK per is detected in outburst (currently V ~ 11) Monitoring of the outburst is very welcome. Resolution : low and high Long time series is encouraged . The period is 2 days. 24 hours monitoring (Europe, North America) should be must. In that purpose, it is sugges...

The UVES lib recalibrated.
I have not yet check in detail the new speectra.
I think its could be a very valuable ressource for amateur spectroscopy.

François-Mathieu Teyssier

https://arxiv.org/pdf/2211.09130.pdf

https://sl.voxastro.org/

Appli donnant en temps réel des alertes GRB, SN, Novae ...
"Astro-Colibri" sur playstore

Thank you for the input, Christophe 3 points: - the processus of publication can be very long - it was my second nova : http://www.astronomie-amateur.fr/feuilles/Spectroscopie/Novae/KT%20Eri%202009.html , just after Nova Sct 2009. I was very happy that I decided to buy a lhires after OHP Shelyak sta...

Following same requests, Jaroslav updated the database. I did the following updates: • changed the default order of spectra on the website - they are sorted by JD, but the newest is on the top of the website; now, the users don't need to scroll to the bottom of the page if they are interested in the...

You are welcome, Wynonah!

An informative publication about R Aqr eclispe that we observed in visible:

https://iopscience.iop.org/article/10.3 ... ac8a47/pdf

A model from IR observations:
Ungoing observations are welcome!
https://aras-database.github.io/database/raqr.html