gully
@gully.bsky.social
interpretable machine learning for atmospheric and astronomical data analysis, near-IR spectra, climate tech, stars & planets; bikes, Austin, diving off bridges into the ocean.
Currently 83% carbon-free energy in Texas right now:
- 40% wind
- 33% solar
- 10% nuclear
Wholesale prices are negative, and 3.5 GW of batteries are charging.
☀️💨⚛️🌎
- 40% wind
- 33% solar
- 10% nuclear
Wholesale prices are negative, and 3.5 GW of batteries are charging.
☀️💨⚛️🌎
January 14, 2026 at 6:52 PM
Currently 83% carbon-free energy in Texas right now:
- 40% wind
- 33% solar
- 10% nuclear
Wholesale prices are negative, and 3.5 GW of batteries are charging.
☀️💨⚛️🌎
- 40% wind
- 33% solar
- 10% nuclear
Wholesale prices are negative, and 3.5 GW of batteries are charging.
☀️💨⚛️🌎
Reposted by gully
Despite headwinds, over 20 new EVs are coming to the US market in 2026, including several more affordable vehicles. Can any thrive without federal tax credits? insideevs.com/news/782572/... 🔌💡 🔌🚗
Over 20 New EVs Are Coming In 2026. These Are The Seven I'm Most Excited About
We’ve been waiting for the next generation of EVs to arrive—cheaper, faster, better. Next year, they’ll finally be here.
insideevs.com
January 4, 2026 at 2:42 PM
Despite headwinds, over 20 new EVs are coming to the US market in 2026, including several more affordable vehicles. Can any thrive without federal tax credits? insideevs.com/news/782572/... 🔌💡 🔌🚗
It’s wild that stellar limb effects start to matter at non-negligible fractions of a resolution element on the ELTs!
Challenge… or opportunity!?
Challenge… or opportunity!?
Andrea Lin presenting on issue predicted to affect accuracy of precise radial velocities on single-mode fiber-fed spectrographs on large telescopes - differential limb coupling. Nearby target stars are typically ~1 milliarcsec, but diffrctn limits in large telescopes ~tens of milliarcsec #ExSoCal
December 16, 2025 at 2:53 AM
It’s wild that stellar limb effects start to matter at non-negligible fractions of a resolution element on the ELTs!
Challenge… or opportunity!?
Challenge… or opportunity!?
Reposted by gully
The first batteries rolled off the production line at Toyota’s new $14 billion battery plant in Liberty, North Carolina. The plant will produce batteries for hybrid, plug-in hybrid & electric models, which Toyota plans to make up 70% of its sales by 2030 electrek.co/2025/11/17/t... 🔌💡 🔌🚗
Toyota's 1,850-acre EV battery plant is live, but the company says this is just the start
Toyota’s $14 billion US battery plant is now up and running. The mega site spans 1,850 acres, or about 121...
electrek.co
November 25, 2025 at 4:11 PM
The first batteries rolled off the production line at Toyota’s new $14 billion battery plant in Liberty, North Carolina. The plant will produce batteries for hybrid, plug-in hybrid & electric models, which Toyota plans to make up 70% of its sales by 2030 electrek.co/2025/11/17/t... 🔌💡 🔌🚗
Reposted by gully
Get outside into a dark place if you can tonight - no guarantees, but a possible brilliant display of the northern lights.
We have upgraded our geomagnetic forecast today (12 November 2025) to the highest intensity level amid an ongoing solar storm.
Current predictions suggest that the activity will result in potentially the largest solar storm to hit our planet in over two decades.
Current predictions suggest that the activity will result in potentially the largest solar storm to hit our planet in over two decades.
November 12, 2025 at 3:30 PM
Get outside into a dark place if you can tonight - no guarantees, but a possible brilliant display of the northern lights.
Reposted by gully
Hat tip @wilsonar.bsky.social for this! 🤣
November 6, 2025 at 12:49 AM
Hat tip @wilsonar.bsky.social for this! 🤣
"Nearly all important discoveries pass through a stage of neglect or obscurity,” Professor W. Grylls Adams went on to explain. “Either the public attention is already preoccupied, or the discoveries come at a time when the public are not prepared to receive them".
Energy, Rhodes
Energy, Rhodes
November 6, 2025 at 2:03 AM
"Nearly all important discoveries pass through a stage of neglect or obscurity,” Professor W. Grylls Adams went on to explain. “Either the public attention is already preoccupied, or the discoveries come at a time when the public are not prepared to receive them".
Energy, Rhodes
Energy, Rhodes
Bookmarking to read later. Several great-looking papers already on the back log! Bravo to folks doing the hard work
Big congrats to Jennifer Burt, Xavier Dumusque, and Sam Halverson on finishing their epic (instant classic) Annual Reviews of Astronomy & Astrophysics article "Precise Radial Velocities"!
arxiv.org/abs/2511.01954
contains some great new graphics for talks on
#exoplanets #EPRV #DopplerSpectroscopy
arxiv.org/abs/2511.01954
contains some great new graphics for talks on
#exoplanets #EPRV #DopplerSpectroscopy
November 5, 2025 at 3:19 PM
Bookmarking to read later. Several great-looking papers already on the back log! Bravo to folks doing the hard work
you cannot do inference without making assumptions
💜 David MacKay inference book still free PDF
www.inference.org.uk/mackay/itila...
💜 David MacKay inference book still free PDF
www.inference.org.uk/mackay/itila...
David MacKay: Information Theory, Inference, and Learning Algorithms: The Book
www.inference.org.uk
November 4, 2025 at 6:20 PM
you cannot do inference without making assumptions
💜 David MacKay inference book still free PDF
www.inference.org.uk/mackay/itila...
💜 David MacKay inference book still free PDF
www.inference.org.uk/mackay/itila...
Just made some sick animations, very jazzed so share these more widely someday
October 31, 2025 at 5:24 PM
Just made some sick animations, very jazzed so share these more widely someday
Howdy yall, how’s it going? Good here 👋
October 31, 2025 at 5:23 PM
Howdy yall, how’s it going? Good here 👋
Reposted by gully
Thrilled to have two years' of work out, in a pair of papers led by @gradientrider.bsky.social and @maxecharles.bsky.social.
We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!
We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!
How we sharpened the James Webb telescope’s vision from a million kilometres away
The only Australian hardware on board the legendary telescope is starting to fulfil its duties.
theconversation.com
October 14, 2025 at 3:35 AM
Thrilled to have two years' of work out, in a pair of papers led by @gradientrider.bsky.social and @maxecharles.bsky.social.
We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!
We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!
The figures in this paper are so satisfying!
Amazing work solving a tricky calibration problem with JWST aperture masking data! Any hope to improve ground-based systematics with this general approach?
@benjaminpope.bsky.social
arxiv.org/abs/2510.09806
@benjaminpope.bsky.social
arxiv.org/abs/2510.09806
AMIGO: a Data-Driven Calibration of the JWST Interferometer
The James Webb Space Telescope (JWST) hosts a non-redundant Aperture Masking Interferometer (AMI) in its Near Infrared Imager and Slitless Spectrograph (NIRISS) instrument, providing the only dedicate...
arxiv.org
October 14, 2025 at 1:44 PM
The figures in this paper are so satisfying!
Gotta say I am enjoying GitHub copilot PRs and code reviews. It really feels like a healthy balance of human in the loop guardrails and leveraging LLMs strengths.
October 10, 2025 at 4:20 PM
Gotta say I am enjoying GitHub copilot PRs and code reviews. It really feels like a healthy balance of human in the loop guardrails and leveraging LLMs strengths.
Academic tautology
beginning to worry I have signed up to too many things
October 10, 2025 at 1:17 PM
Academic tautology
Brown dwarf research (!) was used as the example of how AI slop pollutes internet references
youtu.be/_zfN9wnPvU0?...
youtu.be/_zfN9wnPvU0?...
AI Slop Is Killing Our Channel
YouTube video by Kurzgesagt – In a Nutshell
youtu.be
October 8, 2025 at 8:20 PM
Brown dwarf research (!) was used as the example of how AI slop pollutes internet references
youtu.be/_zfN9wnPvU0?...
youtu.be/_zfN9wnPvU0?...
Pre-LLM human-authored content is like pre-WWII steel, a precious and now scarce resource
en.wikipedia.org/wiki/Low-bac...
en.wikipedia.org/wiki/Low-bac...
October 8, 2025 at 8:12 PM
Pre-LLM human-authored content is like pre-WWII steel, a precious and now scarce resource
en.wikipedia.org/wiki/Low-bac...
en.wikipedia.org/wiki/Low-bac...
Reposted by gully
And as a bonus, here's a false-color composite of the same. Blue is mapped to all of visible, green is infrared beyond 850nm, and red is the methane band at 889nm.
🔭 #astrophotography #saturn
🔭 #astrophotography #saturn
October 6, 2025 at 10:16 AM
And as a bonus, here's a false-color composite of the same. Blue is mapped to all of visible, green is infrared beyond 850nm, and red is the methane band at 889nm.
🔭 #astrophotography #saturn
🔭 #astrophotography #saturn
Yall check this out, it’s the top coolest thing I’ve seen in a while, closed form autodiffable representation of optical interferometry, enormously powerful. Yes!!
New paper by me and @benjaminpope.bsky.social! How well can we map a star using optical interferometry?
This is just a submitted preprint at the moment--comments and questions welcome! (1/N)
arxiv.org/abs/2509.25433
This is just a submitted preprint at the moment--comments and questions welcome! (1/N)
arxiv.org/abs/2509.25433
October 2, 2025 at 1:22 AM
Yall check this out, it’s the top coolest thing I’ve seen in a while, closed form autodiffable representation of optical interferometry, enormously powerful. Yes!!
So stoked about this!
We implement this new math in a new Python/JAX package called harmonix, which is based on and designed to work with a suite of other JAX codes for mapping stars and planets. (7/N)
github.com/shashankdhol...
github.com/shashankdhol...
GitHub - shashankdholakia/harmonix: Analytic interferometry of stellar surfaces using spherical harmonics
Analytic interferometry of stellar surfaces using spherical harmonics - shashankdholakia/harmonix
github.com
October 2, 2025 at 1:17 AM
So stoked about this!
This rules
With the star's map described in spherical harmonics, we found a really neat analytic solution to its Fourier transform. This gives us the visibility function, which is closely related to what we measure from an interferometer. And the solution is linear with respect to the star's map! (6/N)
October 2, 2025 at 1:16 AM
This rules
Is anyone using Typst? Thoughts?
September 23, 2025 at 6:56 PM
Is anyone using Typst? Thoughts?
Ooo new iTerm dock icon is satisfying
September 23, 2025 at 6:56 PM
Ooo new iTerm dock icon is satisfying
Reposted by gully
Interesting exchange between @jigarshahdc.bsky.social and @stephenlacey.bsky.social on latest Open Circuit episode w/ @charlesxhua.bsky.social 🔌💡 www.latitudemedia.com/news/open-ci...
September 22, 2025 at 7:50 PM
Interesting exchange between @jigarshahdc.bsky.social and @stephenlacey.bsky.social on latest Open Circuit episode w/ @charlesxhua.bsky.social 🔌💡 www.latitudemedia.com/news/open-ci...
Reposted by gully
Paper submitted! Quite proud of this one, the plots are pretty 🔭
September 5, 2025 at 9:49 PM
Paper submitted! Quite proud of this one, the plots are pretty 🔭