mattkenworthy

gregeganSF, 14 hours ago to random

Wow, lucky people in Sydney are seeing a fairly rare kind of soliton cloud known as a “roll cloud”: tubular clouds that appear to be rolling across the sky.

https://www.abc.net.au/news/2024-06-04/nsw-sydney-roll-clouds-explainer/103934424

https://en.wikipedia.org/wiki/Arcus_cloud#Roll_cloud

mattkenworthy, 4 days ago to Astro

Watching the sci-fi film “When Worlds Collide!” and this notice caught my eye in the background. Words for all academics to live by. #astrodon 🔭🪐

mattkenworthy, 4 days ago to Astro

Astronomers who build instruments and publish in #SPIE journals - please post the preprints on #arXiv as well! #astrodon #astroinstrumentation

ExoHugh, 7 days ago to Astronomy

#Astronomy has another case of "#Bullshit circles the planet before the truth gets its shoes on" - A recent paper looked for #DysonSpheres by finding red stars which coincided with radio emission. The hype resulted in a thousand news articles... except a new paper shows they failed to check whether normal red M-dwarf stars might happen to be close to normal radio sources (radio-loud AGN) 🤦‍♂️ https://arxiv.org/abs/2405.14921
Now we'll be lucky if this good science gets 10% the press that the original did.

mattkenworthy, 8 days ago to Astro

Oh now THIS is very intriguing! Bernhard and Lloyd with ZTF J185259.31+124955.2: A new evolved disc-eclipsing binary system where the shape of the transit is evolving significantly on every eclipse - look at how much it changes… just wow. 🔭🪐 #astrodon https://arxiv.org/abs/2405.15555

mattkenworthy, 13 days ago to Astro

Ex-student paper day! Sutlieff et al. (2024) using a gvAPP coronagraph to suppress diffraction from the primary star so that the variability of a faint substellar companion can be measured to 3% precision and a 3.2 hour periodic variability detected one night but disappears the next! 🔭🪐 #astrodon https://arxiv.org/abs/2405.12271

Many light curves showing the change in brightness of the BD companion as a function of wavelength. Some wavelengths don't change at all over the 32 hours of monitoring, whilst other wavelengths show very large variations from hour to hour.

mattkenworthy, 14 days ago to Astro

As noted by Arttu Sainio it looks as if #ASASSN-24cf is climbing back to pre-eclipse levels - since the ingress and egress look as if they have the same gradient, I’m guessing this is a large, faint star eclipsing a smaller, hotter star. There’s always something interesting in #ASAS-SN 🔭🪐 #astrodon https://x.com/space_r2/status/1792696145803976876

mattkenworthy, 19 days ago to Astro

One of this morning’s posts on #arxiv had quite a sobering lede: ☀️☠️ #astrodon

mattkenworthy, 20 days ago to Astro

Limbach+ on “Occurrence Rates of Exosatellites Orbiting 3-30MJup Hosts from 44 Spitzer Light Curves” with some very intriguing measurements that are suggesting exomoon eclipses around free floating low mass objects and occurrence rates of ~0.6 for short period terrestrial exosatellites 🔭🪐 #astrodon https://arxiv.org/abs/2405.08116

mattkenworthy, 21 days ago to Astro

On Friday 12 July in the evening I’ll be giving a talk about “Rocks, Rubble and Rings” a.k.a. colliding exoplanets at #SpaceLates at the National Space Centre in Leicester! There are several talks and workshops, ideal for families, so go and book your tickets 🔭🪐 #astrodon #outreach https://www.spacecentre.co.uk/whats-on/space-lates-july/

mattkenworthy, 23 days ago to random

There’s an old castle in a suburb of #Leiden that I take a walk through, and sometimes the water is calm enough to get the reflection.

mattkenworthy, 25 days ago to Astro

Wowsers, we went outside just now in Leiden and you can see red and green auroral bands! They’re faint, but definitely changing on minute timescales! #astrodon #triffids

mattkenworthy, 25 days ago to Astro

Deal and Espinoza present Spelunker: A quick-look Python pipeline for JWST NIRISS FGS Guide Star Data - I love astronomy projects which open up new science from previously unconsidered data streams: it will be very interesting to see what someone discovers with this #JWST data. 🔭🪐 #astrodon https://arxiv.org/abs/2405.05453

ejo60, 27 days ago to random

Surgery today, at the end of the day I’m probably allowed to go home.

mattkenworthy, 29 days ago to Astro

Student paper day! Kleisioti+ on “Direct detectability of tidally heated exomoons by photometric orbital modulation” where she shows that a tidally locked #exomoon with a volcano can be detected with #JWST and two IR bands, even if it’s NOT transiting its parent exoplanet 🔭🪐 #astrodon https://arxiv.org/abs/2405.01970

mattkenworthy, 29 days ago to Astro

Tschudi+ on SPHERE RefPlanets: Search for epsilon Eridani b and warm dust with an absolutely heroic 38.5 hour cumulative integration looking for reflected light from the RV detected planet 🔭🪐 around this nearby star, but no joy, even with nearly eight decades of sensitivity at 1 arcsec! #astrodon https://arxiv.org/abs/2404.19504

spacelizard, 3 months ago to random

I feel I have to give Corsair credit for this.

If you somehow damage or lose a keycap for a Corsair mechanical keyboard you can go to their website and fill in a form and they will send you up to 10 replacement keycaps for a fixed fee of $15 USD, shipping included.

OK, that's a lot of money to pay for one small piece of plastic, but it's still significantly cheaper than having to buy a full replacement set or, even worse, having to buy an entire new keyboard just because no retailers stock replacement keys for your old keyboard anymore (as seems to be the case for my K63).

Having a manufacture supply spare parts for their products direct to customers feels like a level of customer support from a bygone age, and i was delighted to discover that it hasn't gone entirely extinct just yet.

https://help.corsair.com/hc/en-us/p/KeycapRequests