Simon Jelley

Interacting smoke vortices

Wait, you’re 4 days too early with the announcement WH Smith is being rebranded TG Jones! bbc.co.uk/news/articles/…

What method of open sourcing 3D designs do you create? Thingiverse seems a bit old fashioned after their data leak, but git seems unfindable to most looking for CAD/STLs. Suggestions? PS I designed a ramp for my son’s playtrains car wagon that works with a loop of track.

Mesmerising straight line linkage on the pump drive of one of Leicester’s Abbey Pumping Station’s beam engines ⁦@leicestermuseum⁩

@astroferg @astro_Pettit This? petapixel.com/2025/01/14/des…

Star field showing M31, Andromeda and M33, the Pinwheel in Triangulum. The red is f-region atmospheric airglow coupled with some red and green aurora near the soon to rise sun with streaking city lights. Time exposure taken from Cupola using my homemade star tracker.

And the results….

The setting before it clouded over is some of the best I’ve ever seen. Normally this is what it looks like after stacking, not before

This is incredible!

Took this Wednesday night. Pretty happy with it! Roughly 40 mins of light on my C11 with a Hyperstar.

Very nice 3D printed Magnetic Switch: youtube.com/shorts/alvS1Kv…

Remember, helium quickly permeates through balloons, so budget for that when choosing how many balloons you need to take your house to South America @DisneysPixarUP youtube.com/shorts/mTDVH0q…

These rewards really are getting quite small.

Major upgrade to my solar system image this week...

🚨#SavingSessions alert! 🚨 📅 5-6PM TODAY (8th Jan) ✉️ Check your emails to opt in (+ cast your vote to choose your regional team name from the epic list 🥳) Earn 🐙576 (worth 72p) per kWh saved vs norm

There's been lots of aurora lately. It's actually dancing right at this moment. If you want to learn how to photograph the show you can download my guide here: drive.google.com/drive/folders/… And pay whatever you think it's worth here 🙏 💚buymeacoffee.com/angrytheinch

Saw this done a few months ago and was completely wowed, was a significant factor in investing in a new 3D printer! This is a CMYK lithophane, printed with 4 filaments.. which then does this when lit from behind. 🤩 @BambulabGlobal

Merry Christmas everyone. Any ideas how to straighten a #yoto card that has been through the tumble dryer?

🚨#SavingSessions alert: HELLO THERE 🚨 📅 6-7PM TODAY (11th Dec) ✉️ Keep an eye on your emails this afternoon to opt in Earn 🐙480 (worth 60p) per kWh saved vs normal

Hal Abelson, MIT professor