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#Astrodon

58 posts46 participants20 posts today
franco_vazza<p>The epitaph I left on my <a href="https://mastodon.social/tags/twitter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>twitter</span></a> gravestone (I quitted in november 2023 after six years, deleted everything and then reopened the account just to lock my username).</p><p>No regrets ever since, although sometime I miss some of the sparkling debates and friends I had there.</p><p><a href="https://mastodon.social/tags/twittermigration" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>twittermigration</span></a> <a href="https://mastodon.social/tags/Xmigration" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Xmigration</span></a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a></p>
bilbo_le_hobbit :bzh:<p>Ma monture Skywatcher neq6. Ça faisait des mois qu'elle faisait tactactac, inutilisable. Ce matin avec mon voisin on a bricolé dedans (enfin surtout lui, j'y connais rien).<br>Depuis elle tourne comme une horloge. Ça sert aussi à ça, les rencontres astronomiques, à retrouver les copains, et les coups de mains!<br>Mise en station à l'arrache, au pif, résultat, le soleil est toujours centré après plusieurs heures de suivi. <a href="https://mamot.fr/tags/LeTalent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LeTalent</span></a> <a href="https://mamot.fr/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://mamot.fr/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mamot.fr/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mamot.fr/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Anthony Horton<p>I may be slightly obsessed with the astronomy tower.</p><p>The work is over now, I have free time until heading for home tomorrow lunchtime.</p><p><a href="https://aus.social/tags/MAVIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MAVIS</span></a> <a href="https://aus.social/tags/MAVISao" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MAVISao</span></a> <a href="https://aus.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a></p>
Sterenn astro<p>Le coin des astro-photographes branchés sur courant alternatif. <a href="https://astrodon.social/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://astrodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a> <a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://astrodon.social/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a></p>
Sterenn astro<p>Photo rituelle. <a href="https://astrodon.social/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://astrodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://astrodon.social/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a></p>
François, suricate nihiliste<p>N'écoutant que mon courage, j'en profitâmes pour... faire quelques photos de plus, a main levée ISO 3200 et 1/5 de seconde, pour documenter mon périple, au cas ou quelque explorateur local me retrouverait quelques centaines d'années plus tard avec mon DSLR, ensevelis sous le sable fin formé en ces lieux par l'érosion. Non sans oublier de shooter en raw pour pouvoir mieux traiter le bruit a posteriori si jamais je survivais. Instants magiques 💫 <a href="https://social.sciences.re/tags/LHeraultCestUnPeuMoche" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LHeraultCestUnPeuMoche</span></a> <a href="https://social.sciences.re/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://social.sciences.re/tags/LandscapePhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LandscapePhotography</span></a></p>
catherinerhyde<p>The spiral galaxy M88 in Coma Berenices. <br><a href="https://newsmast.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://newsmast.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://newsmast.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a></p>
François, suricate nihiliste<p>Et c'est ainsi que je me retrouvus à nouveau, 45 minutes, 12 chevilles tordues, mollets ecorchés et fessiers bleuis plus tard, mais encore en état à peu près fonctionnel, en haut du cirque où j'avais laissé ma famille à la merci du loup (et des moustiques). <a href="https://social.sciences.re/tags/LandscapePhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LandscapePhotography</span></a> <a href="https://social.sciences.re/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://social.sciences.re/tags/LHeraultCestUnPeuMoche" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LHeraultCestUnPeuMoche</span></a></p>
bilbo_le_hobbit :bzh:<p>Le 915 mm attire du monde à la tombée de la nuit. <br><a href="https://mamot.fr/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a> <a href="https://mamot.fr/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://mamot.fr/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mamot.fr/tags/telescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telescope</span></a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a></p>
bilbo_le_hobbit :bzh:<p>Télescope binoculaire de 600 mm 😍😍😍<a href="https://mamot.fr/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a> <a href="https://mamot.fr/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://mamot.fr/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mamot.fr/tags/telescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telescope</span></a></p>
bilbo_le_hobbit :bzh:<p>L'heure de la sieste.<br><a href="https://mamot.fr/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mamot.fr/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://mamot.fr/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a></p>
Sterenn astro<p>Les rencontres astronomiques du printemps 2025, c'est parti! <a href="https://astrodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://astrodon.social/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://astrodon.social/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a> <a href="https://astrodon.social/tags/telescopes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telescopes</span></a> <a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://astrodon.social/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a></p>
Starry Time Podcast<p>Protostars HOPS 150 and HOPS 153 located in the <a href="https://universeodon.com/tags/constellation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>constellation</span></a> <a href="https://universeodon.com/tags/orion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>orion</span></a></p><p>These protostars are in the Orion Nebula, which won <a href="https://universeodon.com/tags/GoldStar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GoldStar</span></a> in our <a href="https://universeodon.com/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> episode on Orion here: <a href="https://starrytimepodcast.podbean.com/e/orion-cosmic-background/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">starrytimepodcast.podbean.com/</span><span class="invisible">e/orion-cosmic-background/</span></a></p><p>📷 :<a href="https://esahubble.org/images/potw2502a/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">esahubble.org/images/potw2502a</span><span class="invisible">/</span></a></p><p><a href="https://universeodon.com/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://universeodon.com/tags/AstroDon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AstroDon</span></a> <a href="https://universeodon.com/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Science</span></a> <a href="https://universeodon.com/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://universeodon.com/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ESA</span></a> <a href="https://universeodon.com/tags/Hubble" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Hubble</span></a> <a href="https://universeodon.com/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a> <a href="https://universeodon.com/tags/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a></p>
bilbo_le_hobbit :bzh:<p>La nuit dernière aux rencontres astronomiques du printemps : le fantôme des binos. Un exceptionnel instrument composé de deux miroirs de télescope de 600 mm de diamètre montés en binoculaire. La vision stéréo de la nébuleuse du cygne offre un relief à tomber par terre... <a href="https://mamot.fr/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://mamot.fr/tags/StarParty" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StarParty</span></a> <a href="https://mamot.fr/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://mamot.fr/tags/RAP2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RAP2025</span></a> <a href="https://mamot.fr/tags/telescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telescope</span></a></p>
David Blanchflower BSc<p>My final post on Mastodon. This week's sky at a glance, May 30- June 8. Very useful Sky &amp; Telescope observing guide by Alan MacRobert. Good luck in all your doings and clear skies. Hope to see you on BlueSky. <a href="https://mastodon.social/tags/AstroDon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AstroDon</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Astro" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astro</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrophotography</span></a> <a href="https://skyandtelescope.org/astronomy-news/observing-news/this-weeks-sky-at-a-glance-may-30-june-8/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">skyandtelescope.org/astronomy-</span><span class="invisible">news/observing-news/this-weeks-sky-at-a-glance-may-30-june-8/</span></a></p>
franco_vazza<p>New deep radio observations of the "Sausage" cluster ( CIZA J2242.8+5301), which contains one of the most famous radio relics in the sky on <a href="https://mastodon.social/tags/astroph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astroph</span></a></p><p><a href="https://arxiv.org/pdf/2505.23342" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/pdf/2505.23342</span><span class="invisible"></span></a> by G. Lusetti et al. </p><p>Radio relics should trace merger shocks ~Megaparsec wide, launched by mergers in clusters of galaxies. Their modelling extrapolates that of supernova remnants, but there are problems...this paper attempts to solve them by better constraining the shock structure.</p><p><a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a></p>
franco_vazza<p>On <a href="https://mastodon.social/tags/astroph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astroph</span></a> today:<br>using Euclid to study the ram-pressure stripping of galaxies in the Perseus cluster <a href="https://arxiv.org/pdf/2505.23342" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/pdf/2505.23342</span><span class="invisible"></span></a> by George et al.</p><p>Galaxies are orbiting the potential well of clusters of galaxies at a slightly transonic velocity with respect to the gas sound speed; this makes them loose a fraction of their gas and stars and mix them with the intracluster medium.</p><p><a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a></p>
cafuego 🔭🤦🏼‍♂️<p>And my first interpretation of the same data that <span class="h-card" translate="no"><a href="https://newsmast.social/@catherinerhyde" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>catherinerhyde</span></a></span> used for <a href="https://newsmast.social/@catherinerhyde/114593691366852912" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">newsmast.social/@catherinerhyd</span><span class="invisible">e/114593691366852912</span></a></p><p>I have much more focus on the dark dust part of the nebula than the brighter parts being illuminated by the stars. Different tools, different interpretations, different results 😃 </p><p>The data is 9 hours of 300 second exposures with a RedCat 61, UV/IR cut filter and ASI294MC Pro camera.</p><p><a href="https://misanthrope.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a> <a href="https://misanthrope.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://misanthrope.social/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a></p>
Enrique Boeneker<p>How do we know that globular star clusters are the oldest structures of our universe? The answer is surprisingly fascinating.</p><p>Picture number 1 is my latest capture of the largest known globular cluster in the Northern Hemisphere: M13, which I believe contains approximately half a million stars.</p><p>Picture number 2 features pictures of 0.9 m Kitt Peak's Observatory telescope, together with images taken by the Hubble Space Telescope of another glob cluster: M4.</p><p>Well, it turns out that the HST could resolve, after many hours of exposures, the white dwarfs within the latter cluster. Not only that, but it could also analyze them using a technique known as spectroscopy, and determine in this way that these stars are approximately 12 to 13 billion years old.</p><p>This is not only useful for determining the cluster's age, but also for pinpointing the age of the entire universe. So, these tiny "insignificant" star remnants did us a big favor.</p><p><a href="https://astrodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astrodon</span></a> <a href="https://astrodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Astronomy</span></a> <a href="https://astrodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophysics</span></a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrophotography</span></a> <a href="https://astrodon.social/tags/stars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>stars</span></a> <a href="https://astrodon.social/tags/cluster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cluster</span></a> <a href="https://astrodon.social/tags/outdoors" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>outdoors</span></a> <a href="https://astrodon.social/tags/nightsky" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nightsky</span></a></p>
Space Data Scientist<p><a href="https://fosstodon.org/tags/Fosstodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Fosstodon</span></a> crowd, do you think you and others would watch a regular <a href="https://fosstodon.org/tags/stream" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>stream</span></a> of <a href="https://fosstodon.org/tags/hacking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hacking</span></a> <a href="https://fosstodon.org/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> software? For analysing state-of-the-art public data from <a href="https://fosstodon.org/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> telescopes such as JWST, Euclid and Chandra?<br>With play-along coding and opportunity to join astronomy research because we will find bugs? Learning about astronomy along the way? <a href="https://fosstodon.org/tags/opensource" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>opensource</span></a> <a href="https://fosstodon.org/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://fosstodon.org/tags/question" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>question</span></a> <a href="https://fosstodon.org/tags/youtube" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>youtube</span></a> <a href="https://fosstodon.org/tags/Influencer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Influencer</span></a></p>
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