When you want to see the stars, find someplace dark
You see these starfish often enough, they are fairly common on the reef. Often taking a closer look at the commonplace will show something worth a photo. In this case a closeup of the underside of the starfish, a truly odd creature…
Astrophoto gear takes a while to setup. A lot of little bits and pieces are required that make up the mount, the telescopes, and the cameras. This is all connected with cords and cables, a computer, an autoguider, extension cords for power and more. Coming up with a way to minimize the setup is a big advantage. The best solution is to build a personal observatory where the telescope can be setup and remain setup. Since I am not likely to have that solution available any time soon I use the next best thing. I assemble all of the gear and simply roll it out of the garage to use and roll it back when I am done. This reduces the setup time to about 10-15min, in place of almost an hour if done from scratch. The computer and support gear sits on a table small enough to pick up and carry out intact. connect an extension cord for power, connect three cables from the table to the telescope, turn it on and go.
A secretive species, the cusk eels are seldom seen by divers on Hawaiian reefs. They shelter in caves and crevices during the day, emerging at night to forage. This eel was holed up in a shallow crevice low in a rock wall. I shot one half decent photo before it retreated further into the crevice, out of sight.
Dr. Brian Siana
How Stars Destroyed Most of the Atoms in the Universe
Kahilu Theater
Thursday, May 10th
7:00pm
The first galaxies had an extraordinary impact on the young universe. Their ultraviolet light destroyed nearly all of the atoms in the cosmos. This process, called reionization, had severe consequences for galaxies trying to form thereafter. Unfortunately, we have no idea how it happened. In galaxies today ultraviolet light cannot escape, so the first galaxies must have been very different from those we see today. Dr. Siana will describe the quest to detect these first galaxies and their impact on the early universe.
There is no charge for admission to any events in the Makana series.
Presented by W.M. Keck Observatory. This event will also be streamed live on the Keck Observatory website.
There are few open paths to trail ride on this island, a place where landowners gate every side road and jealously guard any access. There are a number of exceptions, but you have to look to find them. One such is a power line road off of Saddle Road. The power line is gone now, the stumps of poles remain where they were sawn down years ago. The road runs arrow straight across the landscape, now serving forestry crews, pig hunters and hikers. Enough traffic traverses the path the keep it clear of growth. Here is a glimpse of natural Hawai’i, where invasive species are relatively few and the calls of native birds echo amongst the ‘Ōhi’a.
It may be a rough trail, but the goal is worth it, a relatively recent cave with an array of classic lava tube features. Emesine cave, is found in the 1881 lava flow that threatened to flow into downtown Hilo, but stopped just short of the city. Today, over a century later, the cave is now an excellent example of volcanic action and how life returns to reclaim the land afterwords.
The flows did not stop until August 10th 1881, reaching within a few miles of downtown Hilo. Some fingers of the flow crossed the present day Komohana and Kumukoa Streets near the University of Hawai’i at Hilo campus. When the flows finally did stop a number of lava tubes were exposed, including Kaumana caves, a popular tourist attraction above Hilo. Also formed in the eruption was a series of tubes higher on the north flank of the volcano, Emesine cave.
I have not had a bad cold in quite a while. Wednesday last week I felt the first symptoms, a sore throat beginning. I expected it, Deb had been suffering for a couple days by then. Thursday morning it was inescapable, I called in sick to work. I hoped it would be over by the weekend, I had promised to help out with Astroday and present a lecture on behalf of Keck at the Mauna Kea VIS. This would be the second run across island to Hilo in as many weeks, after almost a year without visiting Hilo, funny how that works.
By Saturday morning things were better, but not great. So off to Hilo I went, a good dose of decongestant improving the situation. I may not have been at 100%, but I had commitments to keep.
I manned the Keck table for a couple hours until David relived me. We did the Astro Haiku contest again. Not bad, but it was a repeat of last year. We really need to get some science experiment bling for our table next year. I have some ideas for that.
You may notice some old articles this month. I am continuing to re-post stuff from the old blogging platform to migrate the material to the new WordPress platform, the good stuff anyway. If you had not read these old posts before… Enjoy. If this is a repeat for you, I apologize. There will be plenty of new material being posted as well.
A fern draped opening into the earth, that beckons us to explore what was once the domain of Pele. A place of fire and molten rock, now a cool, dripping passage beneath the earth. The island of Hawai’i is riddled with hundreds of miles of lava tubes, most are inaccessible, but some are easy to get to. Kaumana Cave is one of the easy ones.
Going makai, a short path leads to the entrance. There are a few boulders to step carefully through, after which sections of smooth and mostly level surfaces allow a bit easier access. About 50 yards into the downhill section you will reach a choke point, a little scrambling and a bit of duck-walk is necessary to get through. After the narrow, the cave opens back up again. After another hundred yards there are a series of ledges, old crusts left by cooling lava when it half filled the cave. To continue from here requires crawling through another very low passage. Perhaps a good place to turn around if you are only interested in a short exploration.