Newly upgraded solar telescope sees first light

Early image from upgraded solar telescope.

Astronomers have finished a major instrument upgrade of the GREGOR solar telescope in the Canary Islands, making it possible for them to observe features on the Sun’s surface as small as thirty miles in diameter.

The image to the right is an example of the telescope’s new capability, showing the Sun’s granular surface features. From the introduction of the paper describing the upgrade:

GREGOR is Europe’s largest solar telescope. … Its 1.5 m diameter with an optical footprint of 1.44 m allows us to resolve structures on the Sun as small as 50 km at 400 nm.

…A past drawback of GREGOR was that its image quality did not reach the theoretical limit, partly because a risk was taken with untested technologies, such as silicon carbide mirrors, which could not be polished well enough, and partly because of design problems. These difficulties have recently been solved by replacing all silicon carbide mirrors with mirrors made of Zerodur, which can be polished to the required quality, and by redesigning the AO relay optics. GREGOR now operates at its diffraction limit. [emphasis mine]

In other words, the initial mirrors did not work as promised, requiring them to replace them to get the telescope to function as initially designed. By the image above, it looks like their upgrade has worked admirably.

Hawaiian protesters fail to block mirror for solar telescope

The coming dark age: Protesters today tried, and failed, to block the delivery of the primary mirror of a new solar telescope being built on top of Haleakalā on the island of Maui.

Protesters chanted, sang, marched, and blocked the road with two bamboo altars on which they presented offerings of flowers and garlands in a traditional ceremony. Police stood by for about an hour, periodically coming forward to talk with protest organizers.

At 4 a.m., they moved in to clear the road. Protesters were lying down in the road with their arms linked. Police lifted them out of the way to allow the trucks to pass. Several men then rushed forward and threw themselves in front of and under the massive trucks. Police removed the men, along with several others, as protesters shouted, “auwe” (alas), and “shame.” Organizers say three men and two women were arrested.

I think this quote from one of the protest organizers (who happens to be an assistant professor of Hawaiian Studies & Language at the University of Hawaii, epitomizes their movement:

Earlier in the evening, organizer Kahele Dukelow vowed to continue to oppose future construction and to ultimately bring existing telescopes down. “This struggle is going to go on for generations. It’s not going to stop with us,” she told protesters. “We will never accept it.”

Apparently the idea of gaining knowledge about the universe is unacceptable to this college professor and her allies. Such knowledge is evil, and must be blocked at all cost. The only knowledge that matters is the ethnic race heritage of native Hawaiians, no matter how primitive and uncivilized.