iiinova — where your digital self keeps evolving

Dominique Boutigny @alvindediaspar.bsky.social · 20/09/2026

With my telescope + camera, I am following the evolution of the supernova SN 2026aaiv in NGC 7331. Up to now I have been able to collect data over 6 nights through g and r Sloan filters. With Claude I have developed a full automatic pipeline to build the light curve. 🔭🧪

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Reposted by Dominique Boutigny

Cédric Champeau @melix.champeau.me · 17/09/2026

Le diagramme que vous voyez ci-dessous est, si je ne me trompe pas, une première mondiale : la mesure par un astronome amateur des oscillations périodiques du soleil (toutes les 5 min environ). Je vous explique tout ça dans ce billet : melix.github.io/blog/2026/09... #astronomie #science

Un diagramme taille-fréquence des oscillations solaires, montrant un pic à ~3mHz, soit environ 5 minutes.

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Dominique Boutigny @alvindediaspar.bsky.social · 13/09/2026

Captured this last Friday with my 250 mm f/4 Newtonian: a stack of 10x300s exposures through a Sloan g filter. The yellow arrow points to the 19th-magnitude historic Cepheid variable discovered by Edwin Hubble that proved M31 sits far outside the Milky Way. 🔭🧪

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Dominique Boutigny @alvindediaspar.bsky.social · 06/09/2026

Yesterday I made a few images of the supernova Ia 2026aaiv which was discovered by ATLAS on September 1st in NGC 7331 (44 Mly from us). This animation blinks my image against a ZTF reference. 🔭 🧪

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Reposted by Dominique Boutigny

LZ Dark Matter @lzdarkmatter.bsky.social · 01/09/2026

Our new results are out! We have observed a single nuclear recoil in our detector that we find difficult to explain with our background model. Could it be a hint of dark matter? It’s far too early to say, but it’s certainly intriguing! #darkmatter

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Dominique Boutigny @alvindediaspar.bsky.social · 25/08/2026

2 days ago I posted a picture of the eclipse showing a bright spot in the direction of the Moon. As some people suggested that it could be a satellite I wrote a python script to display the satellite trajectories at the time of the picture. Here is the result... 🔭🧪

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Dominique Boutigny @alvindediaspar.bsky.social · 24/08/2026

In one of my picture of the eclipse, taken a little bit before sunset I have a spot on the Moon. It is probably an artefact but there is a slight chance that it is the flash of a meteorite smashing the moon. May I ask you to check your pictures for a similar spot around 18:50 UTC ? 🧪 🔭

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Dominique Boutigny @alvindediaspar.bsky.social · 21/08/2026

Here is a gif animation with my pictures of the total solar eclipse. Note that as I used a filter made from an Astrosolar sheet, the color is very close to the true solar color which is whitish. The Sun is not yellow. The reddish color at the end is the result of atmosphere absorption. 🔭🧪

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Dominique Boutigny @alvindediaspar.bsky.social · 14/08/2026

A few images from the total solar eclipse in Spain 2 days ago. It was a stunning experience! One of those I will never forget 🧪 🔭

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Dominique Boutigny @alvindediaspar.bsky.social · 25/07/2026

This is WR 134, captured from my backyard with my Newton 250/1000 telescope. The final image combines 3.5 hours of Hα and 7.6 hours of OIII exposure. 🧪🔭

The Wolf-Rayet Star WR 134 imaged with a Newton 250/1000 from my backyard

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Dominique Boutigny @alvindediaspar.bsky.social · 06/07/2026

(480) Hansa is a ~56 km asteroid from the main belt. It is currently located at 1.85 UA from Earth in the direction of the Eagle constellation. Here is an animation of 12x180s exposures taken with my 250 mm telescope over 1 hour last Saturday. LEO satellites are such an annoyance ! 🧪🔭

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Dominique Boutigny @alvindediaspar.bsky.social · 16/06/2026

Our PhD student Laurent made this Interactive gravitational lensing applet. Try it... it is soooo cool 😀 lmagristella.github.io/random-scien...

lmagristella.github.io

Interactive gravitational lensing applet

Gravitational lensing (DOWNLOAD LINK AT THE BOTTOM OF THE POST!)

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Dominique Boutigny @alvindediaspar.bsky.social · 14/06/2026

Allez, encore un petit coup de pouce pour financer ce projet très original de @galacticamille.com On y est presque !

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Reposted by Dominique Boutigny

Astronomy 🔭 @astronomy.bsky.social · 03/04/2026

What curiosity does to a species

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Dominique Boutigny @alvindediaspar.bsky.social · 03/04/2026

This evening at sunset from the beach in La Serena (Chile) I took this photo of the Sun just before it disappeared. No need for fancy hardware, just a camera, a little bit of zoom and the atmosphere that acts as a filter and you get several sunspot groups. 🔭

Several sunspot groups are seen on this picture of the Sun taken with just a camera and using the atmosphere as a filter.

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Dominique Boutigny @alvindediaspar.bsky.social · 25/02/2026

This is a major milestone for @vrubinobs.bsky.social The alerts on transient events are flowing. No doubt that this will trigger many important discoveries.

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Dominique Boutigny @alvindediaspar.bsky.social · 28/01/2026

I am blown away by Gemini's ability to decipher 17th-century civil records !!!

Baptismal certificate from 1624 from my wife's family

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Reposted by Dominique Boutigny

ideevl.bsky.social @ideevl.bsky.social · 22/01/2026

🦜🦚🕊Vous nourrissez les #oiseaux dans un espace privé ? Participez à une #enquete scientifique jusqu'au 31 janvier 2026 @mnhn.fr @univparissaclay.bsky.social @villedeparis.bsky.social @upecofficiel.bsky.social l @unistra.fr @agroparistech.fr ⏩Accès à l’enquête : tinyurl.com/y26frffu

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Dominique Boutigny @alvindediaspar.bsky.social · 19/01/2026

Fantastic show of northern lights tonight from my garden in the French Alps 🔭

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Reposted by Dominique Boutigny

Alexis Quintana @alexis-space.bsky.social · 06/01/2026

It's obviously harder to commute uphill to the Paris Observatory with the snow, but the stunning view makes it worth it! 🔭 ❄️

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Dominique Boutigny @alvindediaspar.bsky.social · 31/12/2025

While playing with the LIDAR images in www.geoportail.gouv.fr from @ign.com I remembered that when I was a kid I used to walk in the forest up to the ruins of what we believed to be a motte-and-bailey castle. It is clearly visible here with its circular shape surrounded by ditches.

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Dominique Boutigny @alvindediaspar.bsky.social · 20/12/2025

Look what I received 😀 The book looks very well written with clear step by step explanations and the pictures are gorgeous ! I was more a PixInsight guy but I think that I am going to start seriously using @siril.org. I like the spirit of this project !

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Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · 05/12/2025

🔭 The Bipolar Jets of KX Andromedae Image Credit & Copyright: Tim Schaeffer and the Deep Sky Collective apod.nasa.gov/apod/ap25120...

Blasting outward from variable star KX Andromedae, these stunning bipolar jets are 19 light-years long. Recently discovered, they are revealed in unprecedented detail in this deep telescopic image centered on KX And and composed from over 692 hours of combined image data. In fact, KX And is spectroscopically found to be an interacting binary star system consisting of a bright, hot B-type star with a swollen cool giant star as its co-orbiting, close companion. The stellar material from the cool giant star is likely being transferred to the hot B-type star through an accretion disk, with spectacular symmetric jets driven outward perpendicular to the disk itself. The known distance to KX And of 2,500 light-years, angular size of the jets, and estimated inclination of the accretion disk lead to the size estimate for each jet of an astonishing 19 light-years.

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Reposted by Dominique Boutigny

Astropierre @astropierre.com · 01/12/2025

Félicitations à Guillaume Bertrand @guillaumebertrand.bsky.social qui a récemment reçu le Grand Prix de l’innovation de la Société Astronomique de France pour le projet SUNSCAN, un observatoire solaire autonome open source conçu avec l'équipe STAROS. Plus d'infos sur le projet: www.sunscan.net/fr

sunscan.net

Qu'est-ce que c'est ? | FR | SUNSCAN

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Dominique Boutigny @alvindediaspar.bsky.social · 07/09/2025

In France, the Moon was already totally eclipsed at moonrise making it difficult to spot in the twilight glow. 🔭

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Dominique Boutigny @alvindediaspar.bsky.social · 28/08/2025

A few times in a century, some individuals literally revolutionize a complete field of research thanks to a genius idea that they push and develop up to a point where it becomes a game changing experiment. So long Prof. Weiss !

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Dominique Boutigny @alvindediaspar.bsky.social · 27/08/2025

A successful laser communication over 300 million kilometers with speeds up to 1.8 Mbps ! This is something that really impress me ! I would like to know the technical details that made possible this achievement. Is there a publication on this @esa.int ? www.esa.int/Enabling_Sup...

esa.int

ESA wraps up 300-million-kilometre optical communication campaign

Over the summer, the European Space Agency ran an optical communication demonstration campaign using two observatories on Earth and NASA’s Psyche mission. All four optical links were successful.

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Dominique Boutigny @alvindediaspar.bsky.social · 14/08/2025

Yet another wonderful image of Saturne and satellites from my friend Simon Labergère. This guy is so talented !

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Reposted by Dominique Boutigny

Luna de la Forge de la Lune @forgedelalune.bsky.social · 11/08/2025

Loterie ! Du coup je fais gagner ce nakiri forgé ! Lame en acier carbone 135cr3 manche en padouk et morta Affûtage à la pierre japonaise Pour être tiré au sort il faut reblousquer, liker et être Abonné 😁 Tirage au sort vendredi 20h !

Couteau vu de côté
Manche rouge et noir
Lame noire et blanche

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Dominique Boutigny @alvindediaspar.bsky.social · 01/08/2025

The @vrubinobs.bsky.social has a seismometer inside the pier which is supporting the telescope. Out of curiosity I had a look at the data after the mag 8.8 earthquake that occurred in Kamchatka on July 29th and to my surprise I got the following !

3 seismograms showing the earth movement under the Vera C. Rubin Observatory in Chile. The detection is very likely related to the magnitude 8.8 earthquake that occurred in Kamchatka on July 29th.

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Reposted by Dominique Boutigny

Daniel Pomarède @pomarede.bsky.social · 29/07/2025

Calibrating Rubin Credit: RubinObs/NOIRLab/SLAC/DOE/NSF/AURA/W. O'Mullane noirlab.edu/public/image... 🧪🔭

A picture featuring the LSST Camera in-dome calibration white screen. Scientists use the white screen at left and a uniform light source to measure variations in the 3.2 billion pixels of the LSST Camera. These variations are due to the natural variations from manufacturing the detectors, not variations in the light we collect from space. Scientists use the calibration information they collect using this screen to account for these manufacturing variations in their science data.

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Dominique Boutigny @alvindediaspar.bsky.social · 21/07/2025

And I once again forgot the 🔭 tag 😉

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Dominique Boutigny @alvindediaspar.bsky.social · 21/07/2025

During the Science Verification and Validation phase of the @vrubinobs.bsky.social we were lucky to capture images of the 3I/ATLAS interstellar comet. After the announcement of the discovery we looked at our data and saw that the interstellar body was present in 37 images ! arxiv.org/abs/2507.13409

arxiv.org

NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin ...

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Dominique Boutigny @alvindediaspar.bsky.social · 11/07/2025

Outch ! That is impressive ! I am wondering how they managed to harden the electronics. I guess that the radiation level is pretty intense !

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Michele Bannister @astrokiwi.bsky.social · 02/07/2025

New potential interstellar object in the South: 168 hr arc but e already 9+/-1. H=11. Follow-up encouraged! 🔭

cneos.jpl.nasa.gov

Scout: NEOCP Hazard Assessment

NASA's Near-Earth Object (NEO) web-site. Data related to Earth impact risk, close-approaches, and much more.

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Dominique Boutigny @alvindediaspar.bsky.social · 30/06/2025

I feel proud to be on this 3.2 Giapixel image. It really gives the sense of the incredible size and resolution of the focal plane of @vrubinobs.bsky.social giant camera. The size of the file containing the uncompressed image is "only" 750 MB !

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Rubin LSST:UK @lsstuk.bsky.social · 16/04/2025

If you're new to all things @vrubinobs.bsky.social, check out the new media kit, full of fascinating facts. E.g. the images Rubin will produce are so large that it would take 400 ultra-high-definition televisions to display one of them at full size. rubinobservatory.org/media 🔭

A selection of pages form the Rubin media kit

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Dominique Boutigny @alvindediaspar.bsky.social · 15/04/2025

Je trouve le concept vraiment génial. J'ai hâte de pouvoir contribuer au financement participatif.

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Dominique Boutigny @alvindediaspar.bsky.social · 14/04/2025

Avec ma collègue Sandrine Thomas je serai tout à l'heure en direct dans @sciencecqfd.bsky.social pour parler de l'observatoire Vera Rubin. @vrubinobs.bsky.social

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Dominique Boutigny @alvindediaspar.bsky.social · 29/03/2025

That's all I could get today from the solar eclipse through the clouds in Haute-Savoie. There is a sunspot near the edge at 10 o'clock. 🔭

The March 29th, 2025 partial solar eclipse shot through the clouds in Haute-Savoie (France). There is a sunspot near the edge at 10 o'clock.

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Dominique Boutigny @alvindediaspar.bsky.social · 12/03/2025

The LSST 3.2 Gpixel camera is now installed on the Simonyi telescope. This is a major achievement !

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Dominique Boutigny @alvindediaspar.bsky.social · 28/02/2025

This test of the rotator is an important milestone for the @vrubinobs.bsky.social We also see that the 3.2 GigaPixel camera is now attached to the piece of hardware (the blueish part at 00:10) that will connect it to the telescope.

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Sylvestre Huet @sylvestrehuet.bsky.social · 24/02/2025

En écho à Stand Up for Science qui émerge aux #USA en réaction à l'offensive antiscience de #Trump, un mouvement similaire se lève en France RV les 6 et 7 mars. standupforscience.fr

standupforscience.fr

Stand Up For Science France | Le 7 mars, nous défendons les sciences – parce que les sciences sont un bien commun.

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Dominique Boutigny @alvindediaspar.bsky.social · 21/02/2025

These rectangular pads are the permanent magnets of the linear motor drives of the Vera C. Rubin Observatory Telescope Mount which is able to point toward any celestial position with a very high speed (up to 10.5 deg/s in azimuth). @vrubinobs.bsky.social @lsst-france.bsky.social 🔭

Permanent magnets of the azimuth linear drive of the Vera C. Rubin Telescope Mount Assembly

Permanent magnets of the elevation linear drive of the Vera C. Rubin Telescope Mount Assembly

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Dominique Boutigny @alvindediaspar.bsky.social · 14/02/2025

If you are part of the International Astronomy Community please sign this petition. This is very important.

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