Spring is here

The Swedish solar tower(left)  and the Dutch Open Telescope (right), Roque de Los Muchachos observatory.
The Swedish solar tower (left) and the Dutch Open Telescope (right) yesterday.
 

Spring is obviously here. Some people look for the swifts returning or flowers blooming, but I know it’s spring when the solar telescopes start work after their summer break. It’s not very easy to see whether the Swedish Solar Telescope is working unless you’re close, but yesterday, the Dutch Open Telescope had the clamshell dome down and they were clearly open for science.

It must be time to buy a swimsuit.

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