iiinova — where your digital self keeps evolving

Andy Casely @deep-twilight.bsky.social · 17/08/2026

A cloudy total eclipse from Hellisandur Well, changing lenses with 8min to go as clouds thinned a bit was *not* recommended (eek!), but it was so exciting, a spectacular, almost spiritual view through thinner clouds for totality in Iceland. EOS6Dii @ 400mm. #totaleclipse #icelandeclipse

040

Andy Casely @deep-twilight.bsky.social · 31/07/2026

Saturn, Rhea and spokes 6th July RGB image from a nice session a few weeks ago, some strong ring spokes are on the near-right side on the B-ring. There's a nice storm in the southern mid-latitudes, south is up. Rhea is to the left. Celestron C14, ZWO ASI585MM, 22mins, taken from the Blue Mountains.

072

Andy Casely @deep-twilight.bsky.social · 16/05/2026

A reprocess from the archives - Saturn in June 2018 in excellent conditions, rings tilted well towards us, showing off a substantial polar storm, as well as good definition of four sides of Saturn's polar hexagon. 1/3

271

Andy Casely @deep-twilight.bsky.social · 28/04/2026

Homunculus Nebula expansion - 2008-2026. A sequence of three images, comparing my backyard C14 image with the two HST images (2008 and 2019). The nebula expands from 17" to 21" in diameter and details such as the hole in the 'near' bubble end and jet-like equatorial blasts consistently grow outwards

23913

Andy Casely @deep-twilight.bsky.social · 27/04/2026

Homunculus Nebula in colour Well this came out better than I thought... Captured on Saturday in perfect seeing. Texture in the bubbles, faint outer details, all consistent with HST and Damian Peach's 2017 1m telescope shot. No funky/AI tools here. Maybe the sharpest amateur image of this one?

100

Reposted by Andy Casely

Russ Jones @russincheshire.bsky.social · 11/11/2024

Just for fun, let me tell you about somebody you've probably never heard of, but who was once one of the most famous people in England, a national hero, a disgraced fraudster, and an astonishingly accomplished piratical maniac. He led quite a life. (1/53)

541089353

Reposted by Andy Casely

Leigh Fletcher @leighfletcher.bsky.social · 12/03/2026

Any Sydney-based astronomers here? A team at Andalucia is coordinating an occultation campaign for one of Jupiter's small (2-5km) irregular moons, #Kallichore (a candidate for an #ESAJuice flyby) that'll be passing in front of a star at ~12:20UT on March 18th. opop.obspm.fr/media/data/c...

64825

Reposted by Andy Casely

Helen MC @crystallised-cricket.com · 02/01/2026

Day one of January Cricketpalooza - a net session with @deep-twilight.bsky.social, good to roll the arm over a bit.

141

Reposted by Andy Casely

Dr Laura Driessen @astrolaura.com · 12/11/2025

Want to see the aurora? Tonight might be the night! There have been a bunch of coronal mass ejections (big flares of plasma) from the Sun that are all arriving at Earth today and tonight. theconversation.com/aurora-likel...

theconversation.com

Aurora likely tonight as string of solar flares heads for Earth

Four big outbursts from the Sun mean skies may light up much further from the poles than usual.

2111

Reposted by Andy Casely

Chanda Prescod-Weinstein 🌌 @chanda.blacksky.app · 29/09/2025

YES! THIS on GenAI! Please read this absolutely splendid piece of writing that had me cheering, a little bit weepy, and writing in the margins: "An extraordinary amount of money is spent by the AI industry to ensure that acquiescence is the only plausible response. But marketing is not destiny."

nplusonemag.com

Large Language Muddle | The Editors

The AI upheaval is unique in its ability to metabolize any number of dread-inducing transformations. The university is becoming more corporate, more politically oppressive, and all but hostile to the ...

201176512

Andy Casely @deep-twilight.bsky.social · 27/09/2025

My social media manager for this one is Helen, but I'm pretty chuffed to win the Solar System category at the Malins for the third time in the last five years (move over Brisbane Lions, I'm doing back-to-back wins too 🤣). Congrats to the other winners and finalists too, some great images again

041

Reposted by Andy Casely

Elise Cutts @elisecutts.bsky.social · 24/09/2025

Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪 Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students. I wrote this little profile to mark the 100th anniversary of her thesis:

sciencenews.org

How a Harvard maverick forever changed our concept of the stars

At just 25, Cecilia Payne-Gaposchkin applied quantum physics to a treasure trove of astronomical observations to show that stars are mostly hydrogen and helium.

221869863

Andy Casely @deep-twilight.bsky.social · 25/09/2025

Three galaxies, aurora, mountains and clouds A timelapse from a recent trip to Glenorchy, NZ - beautiful dark skies and plenty to look at, with clouds bubbling off the Humboldt Range, broken enough to see the southern lights below the Milky Way and Magellanic Clouds. EOS6Dii, 228 frames, 20s each

010

Andy Casely @deep-twilight.bsky.social · 25/09/2025

A great summary of the start of the #wncl cricket season by @crystallised-cricket.com . Who will be the breakout stars of 2025-26? I'm looking forward to finding out!

020

Andy Casely @deep-twilight.bsky.social · 24/09/2025

Two comets and Mars, 21st Sept C/2025 R2 (SWAN) is keeping pace with Mars, and fainter C/2025 K1 (ATLAS) is descending towards the Sun. Processing was interesting, correcting for three moving objects against the twilight starfield. Tonight, the Moon joins the party! EOS 6Dii, 35x1min, 300mm @ f/5.

030

Reposted by Andy Casely

Zeke Hausfather @zekehausfather.com · 23/09/2025

In a UN speech today, President Trump said that "all of these [climate] predictions were wrong". Back in 2019 I led a research effort to digitize old climate model projections and assess how well they did. Turns out they got future warming pretty spot on!

16770371

Andy Casely @deep-twilight.bsky.social · 13/09/2025

A Galactic frame of reference What's your point of view? Does the Milky Way set, or does the Earth just get in the way? Been wanting to do this one for a while! ~6hrs, 30s per frame, EOS6Dii, Star Adventurer, Sigma 14-24mm. Processed in PixInsight & PS. #astrophotography #timelapse

0278

Andy Casely @deep-twilight.bsky.social · 10/09/2025

Waxing Moon, 3rd Sept I was playing with camera focus and focal length points on the C14 - 585MM + focal reducer = 7 panel whole Moon mosaic, The full-size processed image is 90 megapixels. Hello, nearest neighbour! Full res view here: photos.app.goo.gl/J5pR2DJYiwrq...

020

Andy Casely @deep-twilight.bsky.social · 30/08/2025

A dusty MIlky Way snap from a short break at Turon Gates, NSW. 29x90s, EOS 6Dii @24mm, Star Adventurer, good skies. Antares region is below centre. #astronomy #astrophotography

070

Reposted by Andy Casely

Leigh Fletcher @leighfletcher.bsky.social · 24/06/2025

Peter Rosén has created another great animation of #Jupiter's storms during the 2024/25 apparition, made from thousands of amateur observations and projected in a variety of different ways. Incredible amount of work must have gone into this #planetsci [Credit: P. Rosén] youtu.be/x1W_Ux_jgaE?...

youtu.be

2 Huge Storms have erupted on Jupiter

YouTube video by Peter R

2244

Andy Casely @deep-twilight.bsky.social · 12/06/2025

You have been kidnapped and a character from the last tv show you watched is trying to rescue you. Who is coming to save you? Chances of survival... slim

000

Reposted by Andy Casely

Lora Kolodny @lorak.bsky.social · 26/05/2025

“When the system forces you to code with a hallucinating clown, eventually you stop resisting. You let him type. You let him be "productive." You check out. You surrender your brain to the noise and just float.” deplet.ing/the-copilot-...

deplet.ing

The Copilot Delusion

Disclaimer: This post was written May 2025, and the arguments apply to AI code capabilities at this time. The arguments around lack of competence are certainly likely to become less prevalent-while th...

1114042

Reposted by Andy Casely

David Slack @slack2thefuture.bsky.social · 26/05/2025

If your business model doesn’t work without breaking the law, then you’re not in business. You’re in organized crime.

10084812681

Andy Casely @deep-twilight.bsky.social · 26/05/2025

Dust storm this morning, everything a bit hazy. Our periodic reminder there's a lot of desert away out west!

000

Andy Casely @deep-twilight.bsky.social · 09/05/2025

Sunrise on Saturn's rings 3 images 3rd-8th May (UT) - rings reappearing through Saturn's equinox on the 6th. First image shows the Sun/Earth-facing outer edge only, likely basically the F ring! (brightest equinox ring in Cassini 2009 data) Last image has south face of the rings illuminated again.

143

Reposted by Andy Casely

CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 07/05/2025

If you like then you better put a ring on it! 🪐 @deep-twilight.bsky.social got a really nice pic of #Saturn during the time when it’s ring system is pretty much edge on to our perspective. And a couple of Moons! Really like the colour of the equatorial and higher latitude belts.

Edge on view of the planet Saturn. The rings appear as a thin black line that dissects the disc of the planet. The colours are hues of soft pink and grey-green

411319

Andy Casely @deep-twilight.bsky.social · 05/05/2025

Hidden rings, 3rd May You can see the rings in a longer-exposed, very heavily-stretched view! The ghostly rings are so faint just now that they are far outshone by 13.5mag Mimas (the fainter of the pair of moons on the left ansa). C14, ASI585MM, 6mins IR642nm. Sunrise on the rings is tomorrow...

051

Andy Casely @deep-twilight.bsky.social · 05/05/2025

Saturn, five moons, no rings What a strange planet! Tomorrow is Saturn's equinox, a rare good look without its famous ring system, far too faint to see in a normally-exposed image, silhouetted against Saturn. Dione, Rhea, Mimas, Tethys and Enceladus too. C14, ASI585MM, 15mins, 3rd May 19:54UT.

062

Andy Casely @deep-twilight.bsky.social · 03/05/2025

Saturn's hidden rings, 2nd May A snap of the dark side of Saturn's rings, only four days before Saturn's equinox. The silhouette of darkened rings cuts across the planet, and the full extent of the very faint rings themselves are in an overexposed and strongly stretched version. #astrophotography

1112

Andy Casely @deep-twilight.bsky.social · 18/04/2025

Thanks @astrobob67.bsky.social for using my recent dark-side Saturn imsges in his latest column for S&T! I had another imaging attempt this morning, and they were even less visible, also not visible in the eyepiece in fairly bright twilight. skyandtelescope.org/astronomy-bl...

skyandtelescope.org

See the Lyrid Meteor Shower the Night of April 21–22

The annual Lyrid meteor shower should put on a great show this year. Enjoy it with dashes of Venus and the "dark side" of Saturn's rings.

000

Reposted by Andy Casely

Emily Hunt @emily.space · 14/04/2025

screw it, let's give everyone a cluster! inspired by @aussiastronomer.bsky.social's exoplanet handouts, every reply to this post will get a Milky Way star cluster + associated cluster fact. I might struggle to keep up if this post gets >100 replies but I'll try!!

657011

Andy Casely @deep-twilight.bsky.social · 14/04/2025

A cloudy crescent Venus on the morning of 13th April, lovely big thin crescent with the long horns from this hellish cloudy planet's atmosphere. Taken just after sunrise in good seeing. Celestron C14, QHY5III200M, 10mins data.

030

Andy Casely @deep-twilight.bsky.social · 13/04/2025

Ghosts of Saturn's Rings Exploring Saturn's rare 'dark side', when the rings are pointed away from the Sun, but towards Earth, and extremely faint! Low in the morning sky, the rings are a dark band across the planet and barely visible in a stretched view. A ringless Saturn is fun! #astrophotography

45312

Andy Casely @deep-twilight.bsky.social · 27/03/2025

Plasma trees Another little Sun set from last week, a couple of bright prominences, one on the limb, one a bit beyond the limb pouring material sideways. Both gone within 24 hours, even though they looked very stable. 50 minutes, 66 frames timelapse, Evostar 100, Quark CS, ASI174MM #astrophotography

051

Andy Casely @deep-twilight.bsky.social · 27/03/2025

Leap to (from) the stars! 80-min timelapse 15th March, a bright prominence detaching and accelerating to escape the Sun at up to 170km/s, 250,000km high by the end. I had to re-frame it as it got higher. 96 frames, 15s video per frame. Evostar 100, Quark CS, ASI174MM. #astrophotography

061

Andy Casely @deep-twilight.bsky.social · 18/03/2025

In a vain attempt at a feed palate-cleanse, here's a Sun shot Sun from Saturday. I took a 100-frame timelapse of a big detaching prominence, this frame caught my eye - faerie, angelic, Icarus perhaps? Headless, in any case! Timelapse to follow. Enjoy 😊☀️ #astrophotography #solarsystem #solarmaximum

0143

Reposted by Andy Casely

Climatologist49 @climatologist49.bsky.social · 05/02/2025

Global average January temperature - color coded by ENSO status. One of these years is not like the others.

715549

Reposted by Andy Casely

Zeke Hausfather @zekehausfather.com · 02/02/2025

January 2025 was quite unexpectedly the warmest January on record at 1.75C above preindustrial, beating the prior record set in 2024. This is despite the presence of La Niña conditions in the tropical Pacific, with the El Niño event of 2023/2024 long faded. www.theclimatebrink....

19692396

Reposted by Andy Casely

Dan Liebke @liebcricket.com · 30/01/2025

Australia v England Test, Day One Report Card, featuring hobble-healed Healy, translating names from French and disrespecting bowling statistics #Ashes 🏏 newsletter.liebcricket.com/p/australia-...

newsletter.liebcricket.com

Australia v England Test, Day One Report Card

Featuring hobble-healed Healy, translating names from French and disrespecting bowling statistics

174

Reposted by Andy Casely

Heidi B. Hammel @hbhammel.bsky.social · 28/01/2025

My colleagues and I are paying close attention to potentially-Earth-impacting asteroid 2024 YR4, which Torino 1 when discovered and now has moved up to Torino 3 ("merits attention by astronomers"). Impact predict is 2032, but more data may reduced probability to zero. cneos.jpl.nasa.gov/sentry/

Torino scale value of 3 mean the following: "A close encounter, meriting attention by astronomers. Current calculations give a 1% or greater chance of collision capable of localized destruction. Most likely, new telescopic observations will lead to re-assignment to Level 0. Attention by public and by public officials is merited if the encounter is less than a decade away." This predicted impact is 2032, which is indeed less tan a decade away.

127523

Andy Casely @deep-twilight.bsky.social · 25/01/2025

Mars, 21st Jan Likely to be my opposition 'portrait' for 2025 - Mars at a v low opposition in Gemini, barely over our roof. Quite fuzzy even in decent seeing. The Valles Marineris is to the lower right, some blue limb clouds, but no sign of Olympus Mons or Tharsis volcanoes. #astrophotography #mars

050

Andy Casely @deep-twilight.bsky.social · 21/01/2025

With all the shit news around, it's hard to focus on nice things and positive science rn. But here is Jupiter in infrared and methane band filters last night. The new NTBs outbreak is just setting on the upper-right limb. Nice seeing for the low altitude too. #Jupiter #astrophotography

070

Andy Casely @deep-twilight.bsky.social · 15/01/2025

Comet C/2024 G3 (ATLAS) at high noon! A lunchtime comet chase of a rare "daytime comet" 100mm scope and DSLR, 5x 1/100s, 8deg from the Sun, garage door protecting optics, Sun almost overhead. Maybe near venus-bright, ~3arcmin tail. Nearest thing I've ever imaged to the Sun...

2576

Reposted by Andy Casely

Paul Byrne @theplanetaryguy.com · 14/01/2025

Fresh impact crater on Earth! This impact occurred on 25 July 2024 in Prince Edward Island, Canada, when a small ordinary chondrite meteorite impacted Earth (someone's driveway, specifically) at about 200 km/h. The impact formed a set of crater rays.

616241

Reposted by Andy Casely

Karl Battams @sungrazercomets.bsky.social · 13/01/2025

I really, REALLY can't get over just how beautiful this comet is in our LASCO images! I mean, I've seen more than a handful of comets in this data over the years (~5,200 to be exact - not that I'm counting...) But I've really gotta say... this might be the pick o' the bunch right here. WOW 😱😍☄️☀️🔭

213335

Andy Casely @deep-twilight.bsky.social · 13/01/2025

Jupiter imaging alert! Another round of the NTBs jetstream outbreak is happening on Jupiter, the science nicely discussed by @leighfletcher.bsky.social here. Last time in 2020, Jupiter was really well-placed in southern skies, this time its a show for the north! #planetary #jupiter #solarsystem 1/4

2155

Andy Casely @deep-twilight.bsky.social · 09/01/2025

In the awful fires around LA (take care, planetary and astro friends there), this little video clip was satisfying to watch. Great work from a helicopter water bomber!

010