@remiboucher
Working at the Mont-Megantic International Dark Sky Reserve / National Park / ASTROLab. Self-proclaimed swiss army knife against #lightpollution. Also interested in science, space, maps, photography, trailrunning, splitboard and more.
Le futur plus grand télescope optique du monde est menacé par la pollution lumineuse. Peut-on encore protéger le ciel, notre fenêtre sur l'Univers? Voir le reportage complet 👉 bit.ly/4srXof4 Et découvrez notre contenu interactif sur la pollution lumineuse 👉 bit.ly/40LtV3K #astronomie
En construction au Chili, le Télescope géant européen est déjà menacé.
Wow, c’est comme la fameuse citation de Duhaime
Interesting
Questionnée par CNN, la Maison-Blanche confirme qu'il s'agit d'une image modifiée et maintient que "les mèmes vont continuer".
(Une photo modifiée par IA d'une suspecte, ce n'est pas un mème. Il faudrait que les gens disent que tout contenu sur les réseaux sociaux est un mème.)
La Maison-Blanche qui modifie à l'aide de l'IA une photo d'une suspecte que l'administration Trump a elle-même fourni aux médias.
Assez incroyable.
Il est plus que temps que les journalistes et politiciens quittent cet endroit pourri
De la paresse, de la tromperie ou un manque de talent. C’est ce que j’ai l’impression de voir à chaque fois je vois de l’IA générative.
I would have love to see a comparison with other mitigating methods, such as the Lighting Intensity Dimming Solution (LIDS) technostrobe.com/en/lids/
Catherine McKenna au Devoir sur le lobby des énergies fossiles: «Ils font de l’écoblanchiment. Ils augmentent leurs émissions, ils n’investissent pas dans l’énergie propre, ils combattent toutes les réglementations et font du lobby contre l’action climatique.» www.ledevoir.com/actualites/e...
Some people are already looking at this difference between overcast and clear on some species.
For example : www.sciencedirect.com/science/arti...
Here's the TESS-W data from the same moment. I had just installed the photometer over there on that day.
tess.dashboards.stars4all.eu/d/tess_raw/s...
Similar effects could probably be detected from mountain tops, when there's fog over cities in the valley
🤣
I'm used to the usual effect of clouds (reflection of light pollution, darkening of the natural sky), but it's interesting to see the zenith being darker than "normal" once the sky overhead cleared but Montreal was still covered, and that the zenith became brighter once the sky cleared over Montreal
This reminds me of a very interesting observation a couple in 2022:
While taking SQC measurements from a park in Montreal's suburbs, I noticed that the zenith became darker just after the clouds cleared overhead but were still covering Montreal (2nd image). The clouds acted like a blanket over MTL
Not being able to attend #ALAN2025 this year, I was looking for someone there posting with the hashtag but didn’t find much :/
Généralement, les compilations de ce genre sont sur l'actualité US. Chouette d'en voir une sur le Québec. Les outils d'IA n'ont fourni une référence complète que dans le tiers des cas et la moitié offraient un résumé "partiellement fidèle".
NEW: Extraordinary footage has emerged of the huge tsunami that hit Russia’s remote Kamchatka peninsula after the 8.8 magnitude earthquake on July 30th.
(🎥 Doni Nikz)
By the way, while these decorative street lights do have a prismatic lens, they are better than they might seem and emit ~120 lm of uplight (2.5%)
Here’s an example of how color and brightness can be used selectively for specific applications instead of painting everything in harsh white light. Street light are 2200K LED, pedestrian crossing is 4000K.
#lightpollution #LED
📍Sherbrooke, QC
Don’t
This picture, taken in January from the ISS, reveals a true transformation of Quebec’s nightscape, marked by the wide adoption of white LEDs in public and private lighting.
In contrast, the Mont-Megantic International Dark Sky Reserve can be seen with its dimmer and amber-colored lighting.
Try a fresh one in Montreal next time
Using a LLM to generate this would fit into their agenda of using AI to run the government. That’s basically what DOGE is trying to do across the US government systems.
Here's map where you can see the light pollution and the locations of the different photometers (not all of them are on the graph).
Each line represent a different photometer. Some of them are located in very dark places with almost no light pollution, and some are closer to cities. This is why some get more dark than others during the eclipse.
graph showing how the night sky became darker during the lunar eclipse of march 14th 2025.
Not as pretty as a picture, but way more geek ;)
Here’s last night's lunar eclipse seen from the TESS-W photometers located in southern Quebec. These instruments measure the sky brightness by looking toward the zenith. (darkness increases the higher you go on the y-axis).
🧵 Des intimidations à l'égard d'un bénévole, puis neuf articles attaquant Wikipédia en onze jours.
Un peu plus de 63 000 signes (titraille incluse).
Et un narratif.
Analyse (amateure) de corpus à dérouler 👇
#Wikipédia #LePoint
What a fucking moron.
