The William Herschel Telescope was for many years the biggest and best optical telescope in Europe (until GranTeCan opened in 2009). The main mirror is 4.2 m across (165″, or 13′ 9″) which astronomers call “a good light bucket”. It’s rather old as world-class telescopes go, since it opened in 1987, but it still produced excellent science. In fact data from the WHT has been used for about 1,500 scientific…
Two of the fourteen telescopes at the Roque de los Muchachos observatory are solar telescopes — highly specialised to observe our own sun. This is the Swedish Solar Telescope, which was one of the first telescopes built on the Roque. It’s currently the best solar telescope in the world since they added the new adaptive optics in 2005. (Adaptive optics compensate for air turbulence.) It can resolve details of the…
My father was a professional botanist, and he went into ecstasies over the wild flowers on La Palma. He was even fascinated by the roadside weeds. You see, because it’s an island, the plants evolved in isolation, and in many cases the plant on La Palma is a different sub-species from the plant in neighbouring Tenerife. For example, echium wildipretti is a very tall cone of tiny flowers. The sub-species…
The people who lived on La Palma before the Spanish arrived in 1493 called the island Benahoare, and themselves Benahorita. (Or according to some people, Benawara and Benawaritas. They insist their spelling is correct. I find this odd, because to me the correct spelling would be the one the people themselves used, only they didn’t write.) The Benahorita probably arrived on La Palma somewhere between 1000 BC and 100 BC,…
Belmaco cave, Mazo Before the Spanish invasion, Belmaco Cave was the home of the kings of Mazo. The first rock carvings were found in the 18th century, which was the start of archaeology in the Canary Islands. Today, it’s open to the public. The entrance where you pay (€1.50 for a resident adult) is also a handicraft shop. A little farther inside, there’s a small, two-story building housing various artefacts,…
Sow thistles look rather like a dandelion gone balistic. That is, the individual flowers look much like dandelions, but they’re growing on a shrub anything up to 2 m (6 ft) tall. And now they’re flowing all over the island, especially on the east, up to about 1,000 ft. Like so many other plants here, La Palma has a different species from everywhere else – Sonchus palmensis. The local names…