AAVSO
The American Association of Variable Star Observers coordinates a global network of amateurs who submit real brightness measurements of stars.
No account needed · sign in to keep your taste everywhere
Stumble onto more like this
One click takes you to a page you didn't know you were looking for. Rate it and the next one lands closer to your taste.
Add to Browser — it's freeWorks in Chrome, Edge and Brave. No account needed.