@astro_jcm@mastodon.online
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astro_jcm

@astro_jcm@mastodon.online

• Astronomer and science communicator
• Media Officer at the European Southern Observatory
• Won't shut up about space
• #astronomy #astrophysics #scicomm #astrophotography #space
• he/him
• Toots in English and español
• 🇪🇸 → 🇺🇸 → 🇨🇱 → 🇩🇪

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astro_jcm, to random
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I mean, it can be an emergency!

astro_jcm, to random
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Current rain situation in

astro_jcm, to chile
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Happy #BlackHoleWeek to those who celebrate! Here's a pic I took a few years ago back when I worked at ESO's Paranal Observatory in #Chile. One of our 8.2 m telescopes was pointing at the centre of the #MilkyWay, home to Sagittarius A*, a #BlackHole 4 million times more massive than the #Sun.

Astronomers devoted almost a century to unmask this beast:

https://www.eso.org/public/blog/our-quest-for-sagittarius-a/

until the Event Horizon Telescope finally imaged it:

https://www.eso.org/public/science/EHT-MilkyWay/

#astrodon #astronomy #space #science

astro_jcm,
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@DelRider The laser excites sodium atoms in a layer 80-90 km above the ground, making them glow. This creates an artificial "star" that we can use to monitor atmospheric turbulence in real time, correcting it with a fast deformable mirror.

EDIT: forgot to mention that it's yellowish because it has a wavelength of 589 nanometres, chosen to excite those sodium atoms.

astro_jcm, to Cat
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This is my spirit animal.

https://poorlydrawnlines.com/comic/simple-pleasures/

astro_jcm, to photography
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astro_jcm,
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@SnerkRabbledauber "Don't let it be forgot, that once there was a spot, for one brief shining moment, that was known as Camelot." -- kaboom! 💥

astro_jcm, to Astro
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May the 4th be with you! Here's a TIE fighter observed with ESO's Very Large Telescope 😉

https://www.eso.org/public/images/potw1009a/

astro_jcm,
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@Unknowable We're ready to defend ourselves! 😂

https://www.eso.org/public/images/eso1613a/

📷 ESO/F. Kamphues

astro_jcm, to chile
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How are we building the largest dome ever? In the latest episode of Chasing Starlight we take you on a behind-the-scenes tour of the dome of ESO's Extremely Large Telescope in

It's 88 m wide and 80 m tall, and it will shelter the ELT and its optics & instruments from the harsh environment of the Atacama Desert –– a true feat of

https://www.youtube.com/watch?v=0WM4gbfFWfE

astro_jcm, to Blog
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Hace unos días tuve el placer de charlar de nuevo con Ángel Rodríguez Lozano en su programa Hablando con Científicos, donde expliqué algunos trucos para identificar imágenes astronómicas falsas.

Podéis descargar el audio aquí: https://cienciaes.com/entrevistas/2024/05/02/fake-astro/

La entrevista está basada en este artículo (en inglés) que escribí hace poco en el #blog de ESO: https://www.eso.org/public/blog/csi-astronomy/

#astronomia #ciencia #astrofotografia #podcast #fotografia

astro_jcm,
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@defcon42 That's a good first-level approach. There are also some very serious astrophotographers out there that produce outstanding (and genuine) iamges, so it's also good to slowly build a list of those trustworthy photographers.

astro_jcm, (edited ) to ocean
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Looking up to the sky to find out what happens deep down in the !

The newly inaugurated OASIS project, operated by the German Aerospace Center and hosted at ESO's Paranal Observatory in , will monitor "airglow" in our atmosphere to better understand tsunamis. 1/3

➡️ https://www.eso.org/public/announcements/ann24006/

astro_jcm,
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Earthquakes create sound waves that travel upwards through the atmosphere. These waves perturb the so-called "airglow" –– light naturally emitted by certain molecules like hydroxyl (OH), visible in astronomical data.

By measuring changes in the spatial structure and the spectrum of airglow, researchers hope to be able to eventually provide early warnings for tsunamis. 2/3

astro_jcm,
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Since airglow also affects astronomical observations, this experiment might also benefit the telescopes at Paranal. While we do have techniques to largely remove airglow from our data, monitoring airglow throughout the night could help us forecast it and optimise how we use telescope time. 3/3

astro_jcm, to InitialD
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A fantastic 4-part series debunking the whole "no was used" narrative that studios keep trying to push these days.

https://www.youtube.com/watch?v=7ttG90raCNo

astro_jcm,
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@LouisIngenthron It's everywhere these days, from studios using it to promote their movies, to movie "journalists" who believe it and parrot it, to audiences who wrongly think they can always spot CGI and "that's why movies used to be better before." It's a vicious circle.

astro_jcm, to chile
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Need to blow off some steam? You're not alone –– galaxies sometimes do that too. Ok, not steam per se, but still.

This is NGC4383, observed with ESO's Very Large Telescope in . This nearby galaxy is undergoing a burst of intense star formation that is ejecting huge amounts of gas out of the galaxy, seen here as red filaments. 1/2

https://www.eso.org/public/images/potw2427a/

📷 ESO/A. Watts et al.

astro_jcm,
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This image was taken with the MUSE instrument at the VLT. MUSE doesn't take images per se. Instead, it breaks the light coming from every point within its field of view into a rainbow or spectrum. This provides astronomers with a wealth of information about the motion and chemical composition of the gas and stars at different points within the image.

Or, put differently: MUSE provides images at thousands of slightly different colours, all in one go, as seen here: https://www.eso.org/public/videos/potw2427a/
2/2

elizabethtasker, to vr
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This week, we're hitting the shop floor for a big design that (I hope) will ultimately become a space for a conference.

So far... it's a doughnut.

Is this to remind attendees that they better getting running around this track to burn off eating too many pastries? We shall see...

astro_jcm,
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@elizabethtasker Before seeing the follow-up images I thought this meeting area was gonna be similar to a spinning space station 🧑‍🚀

astro_jcm, to martialartsmemes
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"Oh, and Juan Carlos uses the telescope's lasers to re-heat his coffee."

https://www.tomgauld.com/

astro_jcm, to Astronomy
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astro_jcm, to Astro
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1/ Most massive stellar in our galaxy found! With 33 times the mass of the Sun, this is the most massive black hole formed after the collapse of a star that we've found so far in the .

ESA's Gaia mission found it via the wobble it induces on a star orbiting it, and data from ground-based telescopes helped confirm its mass and elucidate how it formed.

https://www.eso.org/public/news/eso2408/

astro_jcm,
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@warrickball Indeed, can't wait to see all the amazing science that will come out of it!

astro_jcm,
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@breakpoint Yep, it's a stellar black hole.

dchooper91, to random

I have been stuck in this cycle for way too many days now :blobcatcomfysweat:

astro_jcm,
@astro_jcm@mastodon.online avatar

@dchooper91 Sounds familiar 😬

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