#astrodon — Public Fediverse posts

A mix of "very helpful", "oh, i know about doing that!" and "I didn't understand any of what you said" after my processing with siril demo last night. You win some, you lose some.

Whilst I was inside, the little seestar was busy outside eating photons.

#astrophography #space #astrodon

Dione Mosaic

Many impact craters -- the record of the collision of cosmic debris -- are shown in this mosaic from NASA Voyager 1 of Saturn moon Dione.

More: https://images.nasa.gov/details/PIA00028
Credit: NASA/JPL

#dione #voyager #astrodon #astronomy #astrophotography #astrophysics

Astronomický kalendář Planetum 2027 už je k zakoupení.

https://www.planetum.cz/eshop/produkt/1065-astronomicky-kalendar-planetum-na-rok-2027

Má ho už i Academia na Václaváku, kdybyste to tam měli blíže.

#Astrodon

The Nancy Grace Roman Space Telescope, encapsulated in its payload fairing, stands on the pad at Launch Complex 39A at Kennedy Space Center on Saturday, Aug. 29, 2026

#Roman #Astronomy #Astrophysics #astrodon #space #science #news #NASA #Kennedy #telescope

Gerade nochmal die Sonne durch die Sonnenfilter mit jetzt gereinigtem Objektiv und Fernauslöser fotografiert.

Die Sonnenflecken vom 23.August scheinen sich bewegt oder neu gebildet zu haben.

Schaue gerade bei astroshop.de was ein bezahlbares Sonnenteleskop kostet.

Gibt wohl welche, mit deren Filtern man das Wasserstoff-Licht fotografieren kann und damit die Koronalen Massenauswürfe und Protuberanzen.

Glaube so ein Foto, kombiniert mit einer Sonnenfinsternis, habe ich noch nicht gesehen.

#Sonne #Astronomie #Astrodon #Foto #Sun #astronomy

Ein wunderbares Foto.

Vor allem über die Entfernung von ca. 600 Lichtjahren.

Habe irgendwo mal gelesen, dass Beteigeuze neben der Sonne der einzige Stern am Himmel ist, der nicht nur ein Lichtpunkt ist sondern eine von hier sichtbare Fläche hat.

Keine Ahnung ob das stimmt. Gibt sicher noch andere "rote Überriesen" in vergleichbaren Entfernungen.

Beteigeuze hat ca. 18 Sonnenmassen, ist ca. 750x größer als die Sonne, strahlt ca. 55.000x so stark.

Und er ist im Vergleich zu den knapp 4,6 Milliarden Jahren die unsere Sonne auf dem Buckel hat mit 8,5 Millionen Jahren sehr "jung" für einen Stern.

https://www.heise.de/news/ALMA-Teleskop-zeigt-wie-der-sterbende-Stern-Beteigeuze-wirklich-aussieht-11431904.html

#Astrodon #Astronomie #Beteigeuze #Stern #ALMA #Weltall #Weltraum

MEDIA OUTLETS looking for pieces on the “US Space Academy”

I am an ex-NASA planetary scientist with extensive, award-winning experience in space exploration, space ethics, & public engagement, with recent work on the political economy of space and its relationship to war. (I’m also a NASA Academy alum.) I will analyze this from an ethics & political economy perspective.

[email protected]

#astrodon

Jupiter and Three Galilean Satellites

Jupiter, its Great Red Spot and three of its four largest satellites are visible in this photo taken Feb. 5, 1979, by Voyager 1. Io, Europa, and Callisto are seen against Jupiter disk. http://photojournal.jpl.nasa.gov/catalog/PIA00358

More: https://images.nasa.gov/details/PIA00358
Credit: NASA/JPL

#jupiter #voyager #astrodon #astronomy #astrophotography #astrophysics

Awesome footage of the Roman Space Telescope transport to the launch complex at Kennedy space center

Credit: NASA/Frank Michaux

https://images.nasa.gov/details/KSC-20260824-MH-FMX01-0001-Roman_Space_Telescope_Transport_PHSF_to_LC_39A-M26249

#Roman #Astronomy #Astrophysics #astrodon #space #science #news #NASA #Kennedy #telescope

RE: https://mastodon.social/@setiinstitute/117173734560572354

And to think there's another star inside of that one, fully enveloped by it's bloated partner.

Mighty Betelgeuse!

#Space #Astrodon

NASA’s Nancy Grace Roman Space Telescope, encapsulated in its payload fairing, travels to Launch Complex 39A at Kennedy Space Center, Aug. 25, 2026.

Credit: NASA GSFC

https://images.nasa.gov/details/KSC-20260824-MH-GSF01-0001-Roman_Space_Telescope_Transport_PHSF_to_LC_39A-M26249

#Roman #Astronomy #Astrophysics #astrodon #space #science #news #NASA #Kennedy #telescope

I went out to photograph the #LunarEclipse early this morning, only to end up soaked by Aquarius (or was it a thunderstorm) while rain clouds masked the #LunarEclipse.
Of course the expected break in the clouds occurred after the eclipse had ended. Hoping for clearer skies next time!

#astrodon

RE: https://mastodon.social/@esoastronomy/115563980563569069

This gorgeous star trail image, captured by Chilean astrophotographer Osvaldo Castillo at our Paranal Observatory, is today's Astronomy Picture of the Day! 🥳

https://apod.nasa.gov/apod/ap260828.html

#astrodon #astronomy #astrophotography #astrophysics #space #science

The “three guys from Radboud” did it again. New paper is out in a mathematical physics journal:

“Particle Creation in a Cosmological Background in Analogy to the Schwinger Effect”

We calculate exactly how particles are created out of “nothing” when you compress and relax empty space (a gravitational pulse). This is related to Hawking radiation and uses as setup from the electric Schwinger effect. More explanations later.

#quantumphysics #astrodon #astrophyscis

https://link.springer.com/content/pdf/10.1007/s00220-026-05700-7.pdf

A platform that reviews AI papers also has a collection with no AI in it.

"Dynamics of unstable main belt asteroids": seven papers, curated by Ivana Milić Žitnik. Chaos, Lyapunov times, how reliably they can be computed, proper elements. Not one title mentions a language model. AI finds and summarises here; the curation is a person's.

https://readmarginalia.com/collections/dynamics-of-unstable-main-belt-asteroids?utm_source=mastodon&utm_medium=social

#Astronomy #OpenScience #astrodon

The clouds got in the way, but I’m content with the photos I got! #eclipse #astrodon

Saturn -- Ribbon-like Wave Structure in Atmosphere

A view of Saturn clouds extending from 40 N latitude shows a ribbon-like wave structure in the south with small convective features marking a westward jet in the north. This image was obtained on November 10, 1980 by NASA Voyager 1.

More: https://images.nasa.gov/details/PIA00027
Credit: NASA/JPL

#saturn #voyager #astrodon #astronomy #astrophotography #astrophysics

It seems to have cleared after 3am, because the final targets did rather better than the rest. And hey, Orion is back! 🤩

Each of the telephoto images had a wide view of Orion associated with it, but I only included the better of the two.

#astrophotography #space #seestar #Astrodon

Another partly cloudy night, another set of partly cloudy images. This time I overrode the imaging settings per target, because humans do in fact know better.

I also enabled the new dual capture feature, where the :seestar_s30: uses both the narrow angle and wide angle cameras at the same time. That is a rather nice feature, though probably better used under actual dark skies 😆

#astrophotography #space #seestar #Astrodon

Ganymede at 2.6 million miles

Ganymede at 2.6 million miles http://photojournal.jpl.nasa.gov/catalog/PIA00351

More: https://images.nasa.gov/details/PIA00351
Credit: NASA/JPL

#ganymede #voyager #astrodon #astronomy #astrophotography #astrophysics

NOIRLab image of the week

Lunar Eclipses Flower

Credit: KPNO/NOIRLab/NSF/AURA/Petr Horálek/Institute of Physics in Opava, Robert Sparks, Josef Kujal, John Melson, Dave Hash/Wikimedia

https://noirlab.edu/public/images/iotw2634a/

#Moon #eclipse #lunareclipse #astrodon #astrophotography #NOIRLab #photography

Curiosity Reaches 1-Kilometer Elevation Gain

NASA’s Curiosity Mars rover reached the pinnacle — so far — of its 14-year-old mission on Aug. 26, 2026, when it marked an elevation gain of 1 kilometer in its journey from Gale Crater on Mars up the slope of Mount Sharp.

https://science.nasa.gov/mars/curiosity-reaches-1-kilometer-elevation-gain/

#Curiosity #Mars #science #news #astrodon #rover #CuriosityRover #GaleCrater #MountSharp

Uranus in True and False Color

These two pictures of Uranus -- one in true color (left) and the other in false color -- were compiled from images returned Jan. 17, 1986, by the narrow-angle camera of Voyager 2. The spacecraft was 9.1 million kilometers (5.7 million miles) from the planet, several days from closest approach. The picture at left has been processed to show...

More: https://images.nasa.gov/details/PIA00032
Credit: NASA/JPL

#uranus #voyager #astrodon #astronomy #astrophotography #astrophysics

#Python es una maravilla..
#astronomy #Astrodon

Later on it cleared a bit more, though. And it was at least sufficienly smart to turn on the filter for the bright Orion nebula. #astrophotography #space #Astrodon #seestar

Not the most successful run ever; there was too much cloud early on and the “ai” was not smart enough to turn on the light pollution filter for most targets, despite them being emission nebulae.

#astrophotography #space #Astrodon #seestar

DS9 8.8b2 has just been released - see https://sites.google.com/cfa.harvard.edu/saoimageds9/beta

Here's the new Frame/Reveal Frames mode in action, allowing you to drag a slider to reveal/compare two frames (in this case the X-ray view of Abell 426 [left] and the 2MASS view [right]).

#Astronomy
#Astrodon

RE: https://mathstodon.xyz/@johncarlosbaez/117157156110579461

Absolutely terrifying on a Cthulhian scale!

#Space #Astrodon

NASA’s Nancy Grace Roman Space Telescope transport to Launch Complex 39A, Tuesday, Aug. 25, 2026

Credit: NASA/Kim Shiflett

#Roman #Astronomy #Astrophysics #astrodon #space #science #news