arcsecond.io (@arcsecond_io) 's Twitter Profile
arcsecond.io

@arcsecond_io

The astronomical observations platform. Happy member of the International DarkSky Association.

ID: 3380065600

linkhttps://www.arcsecond.io/ calendar_today17-07-2015 07:36:46

3,3K Tweet

1,1K Followers

3,3K Following

arcsecond.io (@arcsecond_io) 's Twitter Profile Photo

I mean, hell no!!! This is way beyond polluting #starlink tracks! #Astronomy and humanity access to dark skies is in danger. International Astronomical Union (IAU) these "ideas" will continue to florish in the future. What do you do? #INeedClearDarkNights Poke DarkSky International x.com/arcsecond_io/s…

arcsecond.io (@arcsecond_io) 's Twitter Profile Photo

Have you ever observed #Mercury with a massive 4-meter class telescope? Discover how I've been ironically involved a few years ago in a unique observing campaign of the planet Mercury with a giant eye: the NTT of ESO. blog.arcsecond.io/2024/09/01/obs…

arcsecond.io (@arcsecond_io) 's Twitter Profile Photo

Hi Alain Doressoundiram ! 👋 Even if we never met in person, I will always remember this story! I'd be happy to know what you think of it. #mercury #beppicolombo #ntt #emmi #lasilla

Yuri Beletsky (@ybeletsky) 's Twitter Profile Photo

Twilight Magic: Moon & Venus Over the Pacific Ocean 🌅 I just have captured this breathtaking moment where the Moon and Venus gracefully set over the Pacific Ocean. The colors of the twilight sky were absolutely incredible ! ✨Look up at the sky ! #Astrophotography

Twilight Magic: Moon & Venus Over the Pacific Ocean 🌅

I just have captured this breathtaking moment where the Moon and Venus gracefully set over the Pacific Ocean. The colors of the twilight sky were absolutely incredible ! ✨Look up at the sky ! 

#Astrophotography
Thomas Appéré (@thomas_appere) 's Twitter Profile Photo

La sonde BepiColombo 🇪🇺 a obtenu de superbes images de la surface de Mercure lors de son survol à 165 km la nuit dernière 📷 1⃣ Le globe mercurien avec le pôle sud en haut à droite 2⃣ Le cratère Vivaldi, large de 210 km 3⃣ Le cratère Stoddart, 155 km 4⃣ Au + proche de la surface

La sonde <a href="/BepiColombo/">BepiColombo</a> 🇪🇺 a obtenu de superbes images de la surface de Mercure lors de son survol à 165 km la nuit dernière 📷
1⃣ Le globe mercurien avec le pôle sud en haut à droite
2⃣ Le cratère Vivaldi, large de 210 km
3⃣ Le cratère Stoddart, 155 km
4⃣ Au + proche de la surface
arcsecond.io (@arcsecond_io) 's Twitter Profile Photo

Arcsecond just opened a Goodies shop! :-) For the fun! 25% off during 14 days for the opening! Have a look: arcsecond.myspreadshop.com

Eric Lagadec✨🌍 (@ericlagadec) 's Twitter Profile Photo

Je pense que tout le monde a déjà vu cette bande bleue sombre et rose, à l'opposé du Soleil, juste après son coucher. Mais savez-vous que ce que l'on voit là est ... l'ombre de la Terre et ce que l'on appelle la ceinture de Vénus? Thread👇 © Eric Lagadec

Je pense que tout le monde a déjà vu cette  bande bleue sombre et rose, à l'opposé du Soleil, juste après son coucher. Mais savez-vous que ce que l'on voit là est ... l'ombre de la Terre et ce que l'on appelle la ceinture de Vénus? 
Thread👇 
© Eric Lagadec
arcsecond.io (@arcsecond_io) 's Twitter Profile Photo

Not only #Starlink satellites are polluting the visible sky (see here blog.arcsecond.io/2024/08/26/wil…) but also the radio sky! #skypollution

AurorAlpes (@auroralpes) 's Twitter Profile Photo

Vous êtes sur #Grenoble et vous avez envie de rejoindre l'un de nos projets ? On recrute ! 😃 Ce lundi à 18h30 on sort notre simulateur de pilotage de fusées ! Si vous rêvez de faire des émissions de vulgarisation, du bricolage, du code, des soirées astro... bienvenue !

Vous êtes sur #Grenoble et vous avez envie de rejoindre l'un de nos projets ? On recrute ! 😃

Ce lundi à 18h30 on sort notre simulateur de pilotage de fusées ! Si vous rêvez de faire des émissions de vulgarisation, du bricolage, du code, des soirées astro... bienvenue !
Star Walk (@starwalk) 's Twitter Profile Photo

🌌✨ Happy September Equinox, Stargazers! 🌍🌞 Today marks the autumnal equinox, the official start of fall in the Northern Hemisphere, when day and night are nearly the same length. This fascinating celestial event occurs due to Earth’s tilt and its orbit around the Sun. 🧐

ESO (@eso) 's Twitter Profile Photo

☄️ Comet C/2023 A3 (Tsuchinshan ATLAS) looks amazing from the construction site of ESO's Extremely Large Telescope! This image was taken with one of the ELT webcams shortly before sunrise on Sep 28. 1/

☄️ Comet C/2023 A3 (Tsuchinshan ATLAS) looks amazing from the construction site of ESO's Extremely Large Telescope!

This image was taken with one of the ELT webcams shortly before sunrise on Sep 28.

1/
ESO (@eso) 's Twitter Profile Photo

📢 Breaking news! ESO's #VLT has discovered a planet around the closest single star to our Sun! 🪐🔭 eso.org/public/news/es… At just 6 light years away, Barnard b is also one of the few known exoplanets with a mass less than that of Earth. Illustration: ESO/M. Kornmesser

📢 Breaking news! ESO's #VLT has discovered a planet around the closest single star to our Sun! 🪐🔭

eso.org/public/news/es…

At just 6 light years away, Barnard b is also one of the few known exoplanets with a mass less than that of Earth. 

Illustration: ESO/M. Kornmesser
ZTF Survey (@ztfsurvey) 's Twitter Profile Photo

We are thrilled to announce that ZTF Survey will extend scientific operations in 2025/26 thanks to continued support from U.S. National Science Foundation. The expected overlap in observations with Rubin Observatory should enable astronomers to tackle key questions in transient science. ztf.caltech.edu/new/nsf-funds-…

We are thrilled to announce that <a href="/ztfsurvey/">ZTF Survey</a> will extend scientific operations in 2025/26 thanks to continued support from <a href="/NSF/">U.S. National Science Foundation</a>. The expected overlap in observations with <a href="/VRubinObs/">Rubin Observatory</a> should enable astronomers to tackle key questions in transient science. ztf.caltech.edu/new/nsf-funds-…
ESO (@eso) 's Twitter Profile Photo

☄️ Our staff at Paranal Observatory in Chile can't get enough of comet C/2023 A3! This image by Juan Beltrán shows the comet over the Llullaillaco volcano, in the border between Chile and Argentina. 1/

☄️ Our staff at Paranal Observatory in Chile can't get enough of comet C/2023 A3! This image by Juan Beltrán shows the comet over the Llullaillaco volcano, in the border between Chile and Argentina. 1/