Très intéressant.
À titre personnel je retrouve maintenant avec BlueSky ce que j'appréciais de Twitter il y a bien longtemps et qui hélas a disparu. BlueSky est une source d'information scientifique pour moi.

You have all my support @nikosarcevic.com This kind of behavior should stop !

J'aime beaucoup l'article car il met bien l'accent sur ce qui est vraiment important dans ces premières images. C'est à dire les perspectives scientifiques offertes par un instrument hors du commun.

Oui, comme tous les ans.

"...enable highly significant detections with a single observatory, drawing robust inferences about fundamental physics remains limited without data from a multiple observatory network"
est un message clair aux agences qui veulent arrêter l'un des 2 interféromètres LIGO.

Très jolie préface d'un très grand Monsieur.

I just discover your posts on @bsky.app . The meteor spectra are just fantastic ! I would be happy to learn more on the setup that you are using.

La carte que vous montrez indique le niveau de vigilance canicule des départements, pas les températures.
Hélas, la carte des températures est bien rouge violet !

Il faut 3 à 4 nuits pour capturer l'ensemble du ciel visible depuis le Cerro Pachón

I just learnt from a colleague that the the maximum acceleration corresponding to the waves that we detected is ~0.0048 mg while the threshold for human perception is ~1 mg, so the vibrations were tiny !
I also learnt that the time is off by ~10 minutes

In total, we detected earth movement during more than 2 hours ! Fortunately the amplitude was very small and didn't affect the telescope.
It is incredible that such an earthquake has an impact on the whole Planet.
Thanks to @geotales.bsky.social for helping me to understand the data.

The first movement is detected at 23:45 UTC, 21s after the start of the earthquake, I guess it is the P wave. ~00:00 there is another train of waves, I guess that they are S waves. Around 00:30 we see yet another train with lower frequency, probably the Rayleigh waves ???
What do you think @brgm.fr

Yes, have a look to page 30

Interesting fact: @siril.org is mentioned in the list of software used by @vrubinobs.bsky.social for the 3I/ATLAS paper.
🔭

The @vrubinobs.bsky.social will be the ideal apparatus to discover new interstellar visitors during its 10 year operation.

These observations are adding very valuable data points to measure the orbit and the time dependent luminosity of this fascinating object. Data were recorded in 3 different pass band filters (r, i and z).