Tag Archives: Mauna Kea

Hawaiian blue butterfly

An endemic Hawaiian blue butterfly at the Palila Forest Discovery TrailAn endemic Hawaiian blue butterfly at the Palila Forest Discovery Trail

This endemic Hawaiian blue butterfly was flitting around at the Palila Forest Discovery Trail, on the southwest flank of Mauna Kea. This one is, I think, a female with its bright underside and uniformly brown top.

The butterfly is also known as the Koa butterfly, since its caterpillar feeds on that tree. I don’t think Koa trees are found in the trail area, but ‘A‘ali‘i (Dodonaea viscosa), an indigenous Hawaiian plant, does grow there and that’s another plant the caterpillar will eat.

Very Long Baseline Array on Mauna Kea

The very long baseline array on Mauna Kea is one of the ten radio telescopes that make up the Very Long Baseline Array (VLBA)Most of the telescopes on Mauna Kea are clustered together near the summit, but about halfway between the Mauna Kea Visitor Center and the summit is this lonely telescope. It’s one of the ten radio telescopes that make up the Very Long Baseline Array (VLBA), which began operating in 1993. Eight of the other telescopes are scattered around the U.S. mainland with the tenth at St. Croix in the Virgin Islands.

The Mauna Kea telescope, like the others, consists of a dish antenna 82 feet in diameter, and an unmanned control building. These ten telescopes are remotely operated from the Domenici Science Operations Center in Socorro, New Mexico.

For more information about the Very Long Baseline Array, go to https://public.lbo.us/.

Abstracts: James Clerk Maxwell Telescope mirror framework

Framing supports the mirror on the James Clerk Maxwell Telescope.

Last year, when I went on the Kama‘āina Observatory Experience, I visited a couple of telescopes. One of them was the James Clerk Maxwell Telescope, a single-dish telescope dedicated to detecting submillimetre radiation.

One of the things I liked about that telescope was the structure of the supporting framework. It reminded me of something found at Ikea, but on a giant scale. If I’d been involved in putting it together, at the end of the day, when congratulations were being bandied about, I’d have been the one saying, “Er, I’ve got a rod and three little hexagonal nuts left over. Where do they go?”

Mauna Kea shadow

The shadow of Mauna Kea stretches out above the clouds.

Seen from the top of Mauna Kea, what is this shape we’re looking at, stretched out over the clouds, with that crisp corner at the top? It is, of course, the shadow of the volcano itself.

I like this image a lot, I think because it’s something I never thought about until I saw it. Then, I was immediately struck by how it illustrates the size of Mauna Kea and what a classic volcano it is.