Category Archives: Weather

Tugs and a barge

A lot of cargo for Hawaii is delivered by ship to Honolulu on Oahu. Cargo for the smaller (in population) islands is then distributed by inter-island barges. One of their ports of call is Kawaihae, on the west coast of the Big Island.

When the tug and barge arrives at the port, a second tug is sent out to hook a line onto the stern of the barge, so that it can help check the momentum of the barge. The tug at the front stops towing and assists in this braking process. Once the barge has pretty much come to a stop, the two tugs push the barge around until it’s alongside the jetty for unloading.

These photos show some of that process. Above: entering the port and slowing down. Below: both tugs begin to push the barge.

Posted in response to this week’s Friendly Friday challenge on the theme of ‘Between the Lines.’ See more responses here.

Keck 1 and 2 telescopes

This week’s Friendly Friday challenge theme is ‘Twins.’ (See more responses here.)

These are the two telescopes of the W. M. Keck Observatory on Mauna Kea. Keck 1 began operation in November, 1990, while Keck 2 made its first observations in October 1996. Each telescope’s 10-meter primary mirror is made up of 36 segments, hexagonal in shape. Not that these segments are small themselves. Each one is 1.8 meters wide and weighs half a ton.

The telescopes can accommodate a wide variety of instruments, such as cameras and spectrometers, and are considered to be the most scientifically productive in the world.

For more information about the W. M. Keck Observatory, go to www.keckobservatory.org.

Mauna Kea pu’us and shadows

This week’s Friendly Friday challenge theme is ‘Shadows.’ See more responses here.

This view was taken near the summit of Mauna Kea. Pu’us – little volcanic cinder cones – dot the landscape here, giving the area an otherworldly look. As the sun sets, the pu’us cast shadows on one another accentuating the slopes and craters.