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Producer's Notes: Eclipse Chasers

 

Gabriela Quirós by Gabriela Quirós  November 10th, 2008
37.7631, -122.409

QUEST tells the story of two Bay Area eclipse chasers – people so entranced by the sight of the moon completely covering the sun that they travel around the world to get a firsthand view of the phenomenon. Paul Doherty is a physicist at San Francisco's Exploratorium who was part of the museum's team that broadcast the latest total eclipse live, on Aug. 1, 2008, from China's Gobi desert. The second eclipse chaser profiled in our story is Charles Burckhalter, the first director of the Chabot Space and Science Center, in Oakland, who in 1900 pioneered a way of photographing total solar eclipses. With a contraption that he placed on his telescope, he was able to take detailed photos of the sun's corona, the halo that peaks out from behind the moon when it covers the sun during an eclipse.

The footage of the August total eclipse that we got from the Exploratorium and used in our story is incredibly beautiful. The red images of the sun that you'll see are created by a telescope that views the sun in a wavelength of hydrogen gas. "The sun is mostly made of hydrogen gas," said Doherty, "and this is a deep red wavelength called hydrogen alpha." You can watch the entire China 2008 eclipse on the Exploratorium's web site. And Doherty recommends trying to view the next two total solar eclipses live. They will be visible on July 22, 2009, from Shanghai, China, and on July 11, 2010, from Easter Island. But if your budget doesn't allow you to travel that far, you can always wait until 2017, when a total eclipse will be visible in Washington and Oregon and all the way across the United States to South Carolina. Or you can plan to visit the Exploratorium or the Chabot Space and Science Center on any of those three days, to watch the eclipse through their live feed.


Watch the Eclipse Chasers television story report online.


Come Together, Bright Planets, Over Me….

 

Ben Burress by Ben Burress  June 20th, 2008
37.7631, -122.409

Depiction of a major alignment of
the five visible planets in 1059 BCE.

Photo By Ben Burress

There are some pretty good "lineups" coming soon to skies above you.

First of all, "lineups," or alignments, go on in the heavens all the time, though most often they are alignments of objects too faint to easily notice, if at all. With that said, this summer holds some significant alignments of some of the brightest objects in the sky.

First on my hit list is the upcoming Saturn-Mars "near-miss". Though these two planets are not coming physically close to each other (the closest actual distance they come to each other is about 750 million miles), they will align so closely along the same line of sight that on July 11th they will appear only ¾ of a degree apart-that's not much greater than the width of a Full Moon. The best time to see this pairing is after sunset on the evenings of July 10, 11, and 12, over the western horizon.

The next big ticket alignment is on August 1st, when the Moon and the Sun occupy the same spot in the sky-the event we call a Total Solar Eclipse. As it happens, we won't be able to see this eclipse directly from the United States, as it will only be visible in Asia. However, NASA will be broadcasting live coverage of the eclipse from Northern China. We'll be showing NASA's broadcast in our planetarium at Chabot Space and Science Center, in case you'd care to come up and enjoy the spectacle. Don't let the fact that the live event goes on around 4:00 AM keep you away…it's worth getting up for!

A bit further out on the calendar is the September alignment of three planets: Venus, Mars, and Mercury. In the dusky twilight of mid-September evenings the three will be gathering. The closest grouping of the trio is on September 11th, when they will be within about three degrees of each other-close enough that you can just about cover all three with your thumb. Mercury and Mars won't be very bright in the twilight-but Venus, bright enough to spot easily, can help guide your eye to the other two. Using a pair of binoculars will help a lot-but make sure you don't point them that way until after the Sun sets….

In ancient times (and in some cases not so ancient times), different cultures around the world have viewed alignments like these in different ways. Eclipses-both solar and lunar-were regarded by many cultures as bad omens, or bad occurrences (such as the Sun being devoured by a celestial animal-dragon, dog or other-in the case of a solar eclipse).

Planetary alignments were also given special consideration, sometimes being regarded as auspicious (for good or bad-usually the latter). One major alignment of the five visible planets (February 26, 1953 BCE) was believed to have "mandated" the creation of the Hsia Dynasty in China-the first great Chinese Dynasty. (Then, four centuries later, Mars, Mercury, Jupiter and Saturn apparently conspired to bring down that same dynasty-at least, their alignment on December 20, 1576 BCE was interpreted as an indicator of the dynasty's corruption, and it was overthrown by a revolt of believers…).

However you regard the lining up of celestial bodies (astronomically, astrologically, or aesthetically), these alignments are pleasing to watch, and times to reflect upon the constant and cyclic movement among the heavens. Enjoy….