Another eclipse picture

Moon near end of totality

The Moon near the end of totality.

JISHOU, HUNAN — I had to Photoshop this one a bit to clean it up. I mistakenly had the Tamron’s vibration control on, and the resulting movement smeared the Moon’s image, but left the star images intact.

This is a 10-second exposure with the lens zoomed to 230 mm, taken near the end of totality around 11:00 pm local time. Everything else is the same: Nikon D60 on tripod, Tamron 70-300 zoom lens, f5.6, ASA 200.

The stars surrounding the Moon are fainter members of Taurus: from top left going clockwise, 13 Tau/HIP23900A, iota Tau/HIP23497, HIP23589, 15 Tau/HIP23883 (closest apparently to Moon here), and L Tau/HIP 23871. Iota Tau is a member of the Hyades star cluster, whose V-shape outlines the horns of the bull. The stars of the Hyades are about 150-160 light-years away from Earth.

How do I know which star is which? It’s not an encyclopedic memory or fancy astronomy equipment. I used Stellarium, a free planetarium application for your computer. Here’s a screen shot of Stellarium showing the same view on my desktop.

Stellarium simulation

Screenshot of Stellarium view of Moon at 11:00 pm Dec 10, 2001

Stellarium will give you details about any object you click on.

Interestingly enough, 15 Tau, which in this photo appears closest to the Moon, is actually the farthest star of the five from us. It’s 1032 light-years away. That’s some old light there.

Post to Twitter

Possibly related posts:

Lunar eclipse, December 10, 2011

Eclipsed Moon and Alnath (Beta Tauri)

Alnath (β Tau) and the eclipsed Moon -1 sec exposure

JISHOU, HUNAN — I caught the total lunar eclipse about halfway through totality. I didn’t do all the good stuff, like wait for the equipment to cool to ambient temperature (0°C here), because I almost forgot to go out. So, out of 25 shots I got three halfway decent ones. The focus seems to be a bit off, I fear.

The three images here are of the Moon toward the end of totality. You can just barely see it brighten on the lower right edge as it leaves the Earth’s shadow. The star to the left is Alnath (β Tauri), the second brightest star in Taurus. Alnath is a bluish-white B-class star, about 700 times brighter than the Sun, 4.5 times heavier and 5 times bigger. It’s 131 light-years away.

I used a tripod-mounted Nikon D60 with a 70-300 Tamron zoom lens at 70 mm, f5.6, ASA 200. The three exposures are 1.0 sec (above), 1.6 sec and 2.5 sec (below).

Alnath and Eclipsed Moon - 1.6 sec exposure

Alnath (β Tau) and eclipsed Moon - 1.6 sec exposure

Alnath and eclipsed Moon - 2.6 sec exposure

Alnath (β Tau) and eclipsed Moon - 2.6 sec exposure

Totality ended around 11:00 pm here.

Post to Twitter

Possibly related posts:

John Freshwater: the gift that keeps on giving

JISHOU, HUNAN — Back when I was a science teacher, I started blogged about an Ohio public school science teacher who got in hot water for (1) allegedly using a Tesla coil on his students, (2) teaching evolution was false and (3) going overboard with his religious proselytizing in the classroom.

Without going into a lot of details, let’s just say that teacher, John Freshwater of Mount Vernon, was removed from classroom teaching pending an administrative hearing about insubordination. After a two-year-long administrative hearing process, Freshwater lost his job earlier this year. He and the Mount Vernon school system were also named in a federal discrimination complaint brought by a student’s family; the school district settled out of court and Freshwater, following an unsuccessful appeal, also had to pay damages to the family. Meanwhile, he filed, and later dropped, his own discrimination complaint in federal court against the school system.

So, after all these proceedings which suggest that Freshwater was to some degree culpable, I learn that he has the nerve to play the victim card on David Barton and Rick Green’s WallBuilders Live radio program.

Here’s a partial transcript, courtesy of Right Wing Watch.

Possibly related posts:

Powers of Ten for the 21st century

JISHOU, HUNAN — In 1968 Ray Eames and her husband Charles Eames (of Eames chair fame) released a remarkable short film called Powers of Ten. You may have seen it in a science class, if you were lucky. It opens with a couple having a picnic, then zooms in with ever increasing detail to an atomic nucleus, then zooms out at high speed into outer space. Each step decreases or increases the magnification by a multiple of ten.

You can watch at Vimeo.

Now there’s a Shockwave version of the same idea, by Cary and Michael Huang. A slide control allows you to explore at your own pace.

It takes a while to load, but it’s worth the wait. Nothing showy or (ahem) flashy, but neither was the Eames film.

Post to Twitter

Possibly related posts:

Complementarity and ‘America the Beautiful’

Mouseover text: Colorado is working to develop coherent amber waves, which would allow them to finally destroy Kansas and Nebraska with a devastating but majestic grain laser.

It’s a physics joke. If you don’t get it, look up wave-particle duality and the Uncertainty Principle, which only exists as a Wikipedia entry when you are looking at it.

Quiz on Monday.

Post to Twitter

Possibly related posts:

Next step, actual flames …

Steaming head

Somehow, yelling "Flame on!" just doesn't work

 
Human Torch

But it works for the Human Torch.

SANGZHI, HUNAN — OK, so I’m not really Johnny Storm, but it’s a cool photo, anyway. My friend snapped it as we were leaving Jiutian Cave here. After a long climb out of the cool, humid cave into the warm, drier surface air, I was sweating and my head was literally steaming.

The cave trip Thursday was my last excursion for the week-long National Holiday. Earlier in the week, I accompanied two friends (a young married couple) to a wedding in Huarong, a small city near Yueyang, Hunan. Then they drove me to Yueyang, where I met another friend and visited that city for two days. When I came back to Jishou on Wednesday, I literally turned right around and headed out again to Sangzhi with another friend, her cousin, aunt and uncle.

We also visited the reconstructed home of He Long, a revolutionary leader who was later purged during the Cultural Revolution. He was thrown into prison (where he died at age 74), his original home was razed, and his siblings were prevented from attending university. He didn’t get a formal state burial until 40 years after his death.

On our way back to Jishou, we stopped at a roadside marker for the Guzhang County “Golden Spike” — an international reference point for the sedimentary layer corresponding to stage 7* of the Cambrian Period beginning 503 million years ago. The rather elaborate marker includes relief images of Lejopyge laevigata trilobites, which made their first appearance at this time.

Possibly related posts:

Gorgeous amateur astrophotography images at the BBC website

The Royal Observatory at Greenwich and Sky at Night magazine sponsor an astrophotography contest each year. The 2011 winners are highlighted in a slide show at the BBC website.

This is the overall winner, a mosaic of Jupiter with two of its moons, Io (left) and Ganymede. The details on all three images in this composite are amazing, and that’s what impressed the judges, too. Damien Peach used a Celestron 14-inch Schmidt-Cassegrain telescope with a Point Grey Flea3 CCD camera to capture these images.

Jupiter Io and Ganymede by Damien Peach

The overall winner of the 2011 Astronomy Photographer contest, by D. Peach

I want to highlight this one at left, too, because it shows a feature of our solar system not commonly seen.

Zodiacal light - Texas by H. Grady

The zodiacal light by Harley Grady

It was the winner in the Newcomer category, and shows the zodiacal light from a farm in Texas. You have to have exceptionally clear, dark skies to capture the zodiacal light, which is the very faint reflection of sunlight from the gas and dust within our own solar system.

Harley Grady took this image with a Canon EOS 5D Mk II DSLR camera with a 16-35mm lens, which shows what you can do with fairly simple equipment. All you need is a good tripod, or some other sturdy support, clear skies and some patience. Long exposure times bring out details our naked eyes cannot see.

You can also see the winners, picked from nearly 800 entries, at the Sky at Night website.

Post to Twitter

Possibly related posts: