Dominique Boutigny
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alvindediaspar.bsky.social
Dominique Boutigny
@alvindediaspar.bsky.social
Researcher at CNRS-IN2P3 Laboratoire d'Annecy de Physique des Particules
Work on Vera C. Rubin Observatory and Dark Energy Science Collaboration (DESC)
Also amateur astronomer when the sky is clear
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.
September 24, 2025 at 4:31 PM
You have all my support @nikosarcevic.com This kind of behavior should stop !
September 24, 2025 at 12:36 PM
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.
September 16, 2025 at 9:46 AM
Oui, comme tous les ans.
September 14, 2025 at 12:25 PM
"...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.
September 12, 2025 at 12:49 PM
Très jolie préface d'un très grand Monsieur.
September 3, 2025 at 7:00 AM
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.
August 13, 2025 at 9:21 AM
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 !
August 12, 2025 at 7:45 AM
Il faut 3 à 4 nuits pour capturer l'ensemble du ciel visible depuis le Cerro Pachón
August 2, 2025 at 5:31 PM
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
August 1, 2025 at 10:18 PM
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.
August 1, 2025 at 4:08 PM
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
August 1, 2025 at 4:08 PM
Yes, have a look to page 30
July 22, 2025 at 2:33 PM
Interesting fact: @siril.org is mentioned in the list of software used by @vrubinobs.bsky.social for the 3I/ATLAS paper.
🔭
July 21, 2025 at 5:19 PM
The @vrubinobs.bsky.social will be the ideal apparatus to discover new interstellar visitors during its 10 year operation.
July 21, 2025 at 10:09 AM
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).
July 21, 2025 at 10:09 AM