Arcsecond - The Astronomical Observations Platform

Starlink tracks over the course of one full astronomical night.

How do you know if #Starlink satellites will pollute or not your astronomical observations?

Discover #Arcsecond's brand new #Starlink #pollution estimator, described in our new #blog that I am happy to introduce with this article!

Read on at: blog.arcsecond.io/2024/08/26/w... (Arcsecond Blog)

Oh, by the way, Arcsecond V5 is live. It has been put inline at the date planned. 🥳 No time to post here, bummer! I am busy polishing the details. Visit us to discover our new observations planner!!!

… the Comets will have a Comet icon! (They share the Asteroid one for now…) 👏🥳 #teaser #joke #v5 (P.S. All icons have been redesigned).

J-11 before our release of Arcsecond V5. Biggest update ever, and finally a consistent platform like you have never seen for astronomers, observatories, astro clubs, universities etc. As a teaser, I am happy to share with you one of the key new feature… 🥁

Sampling Over-Massive Black Holes at Cosmic Noon - AAS Nova For the first time, researchers have examined a population of black holes that may fill in the gap between over-massive black holes in the early universe and those present today.

For the first time, researchers have examined a population of black holes that may fill in the gap between over-massive black holes in the early universe and those present today. aasnova.org/2024/05/08/s... 🔭🧪

*** SUPERNOVA ALERT *** 🔭📸🚨

Astrophotographers/astronomers with 'scopes capable of low-res spectrography:

Turn your telescopes to NGC 3621, a field galaxy *only* 7 MPC away! Supernova alert issued with progenitor data available. ⭐💥

www.wis-tns.org/astronotes/a...

www.wis-tns.org/astronotes/a...

🔭 🌏 🌑 🌞 Just three days to go, are you ready for the solar #eclipse ? I wrote an app which gives you super precise timings for when the eclipse will happen based on your location. It's free, has no ads or add-ons. Give it a try!

apps.apple.com/us/app/2024-...

#astronomy #swiftui #solareclipse

Seeing an eclipse was one of the most profound experiences of my life.

Shame on NY leadership for mandating a 3hr prison lockdown on Monday, even after they ordered eclipse glasses for every inmate.

Incarcerated people deserve to see this once in a lifetime event. Read more here. 🔭🧪

alphaXiv is a forum for anyone to comment line-by-line on arXiv papers.

This is a great idea in principle; it will be fascinating to see how it works out in practice.
alphaxiv.org

Happy Equinox everyone ! 🌌 See you in the Solstice for major news. 🤩

Act Now | Save the Chandra X-ray Observatory Ask that Congress #SaveChandra! | The Chandra X-ray Observatory, one of NASA's last Great Observatories, has revolutionized our understanding of the Universe, mapped black holes across cosmic time, ...

“Save Chandra” website now up with explanation of the budgetary threat to this Great Observatory, some necessary corrections regarding current mission capabilities and operating costs, and - most important - ways that you can help. 🧪 🔭 🛰️ Spread widely!

Superbe! 🤩

Cette image est dingue 🤯.
La zone noire sur l’image de gauche est un lac de lave sur la lune Io de Jupiter.
A droite, la même zone a été photographiée à une géométrie d’observation différente. Le lac apparaît plus clair car on voit l’éclat du soleil qui s’y reflète !
📷Traitement de B. Jonsson

pgbouncer just installed on prod database. Hopefully, this will avoid these situations of not having enough db connections.

Waking up this morning with 113 finding chart errors… I will try to workaround it before V5 (which is a radically different implementation). 😦😦😦

😲

The JWST weekly public data report has been updated for Feb 5 - Feb 12.
We're expected to receive new images of Uranus (Feb 6) and 4 spiral galaxies.
Full feed report-
jwstfeed.com/PostView/Fee...
🔭 🧪

Vous voulez voir plein de galaxies que le JWST vient d'observer ?
C'est cadeau !

Superbe coucher de Soleil au-dessus de l'observatoire de Cerro Tololo au Chili!
© Babak Tafreshi /NOIRLab /AURA /NSF

75 Years Later, Palomar Observatory Still Shaping Astronomy Formerly the world’s largest working telescope for more than 40 years, the facility remains cutting-edge thanks to new instrumentation

🔭 a nice article on the 200 inch Hale telescope at Palomar Observatory, on the occasion of its 75th anniversary.
www.caltech.edu/about/news/7...

Are Binary Black Hole Spins and Mass Ratios Correlated? - AAS Nova Researchers have used new models to explore whether reported correlations in the properties of black hole binary systems are real or just a consequence of previous statistical methods.

Are Binary Black Hole Spins and Mass Ratios Correlated?

Researchers have used models to explore whether correlations in the properties of black hole binary systems are real or just a result of our statistical methods. 🔭 aasnova.org/2024/01/24/a...

R.I.P. Arno Penzias (1933-2024) Yesterday I heard the sad news of the death, at the age of 90, of American physicist and radio astronomer Arno Allan Penzias. I've used the above image hundreds of times in popular talks. It shows Rob...

telescoper.blog/2024/01/24/r...

I am glad to see my former boss in La Silla Observatory taking care of a serious investigation on that subject. Unfortunately, their conclusions are not good for astronomy and all night sky science. 😭 #spectroscopy #darksky

New paper on arxiv by Olivier Hainaut talking about how reflected sunlight from satellite constellations can contaminate astronomical spectroscopy arxiv.org/abs/2401.09976

A quiet v4.1.3 release of Arcsecond announced just right now, while the big news are still un preparation... www.arcsecond.io/changelog

Of course we couldn’t ignore a social network called “BlueSky”! Still many people present in the sky-polluter “X” though… I guess we live in a complicated world.

More to come about Arcsecond here soon! (Will fill the profile too 😅).