Showing posts with label CHARA Array. Show all posts
Showing posts with label CHARA Array. Show all posts

Monday, September 28, 2015

Mt. Wilson Observatory Hideout IV: Farewell for Now

Update 10/2/15: I heard from Ken Evans, Mt. Wilson volunteer (thank you, Ken!). He's always got great info:
"Hi Petrea -  I was looking at your web page and saw your photo of the big bucket outside the Monastery kitchen at Mt. Wilson.  It was used to haul concrete up to the second floor of the Monastery during construction. I have seen photos on the Huntington Library digital images page that show the Monastery under construction. It shows a wood tower with pulleys and cable system to haul the bucket up. The power for the lift was a Model T Ford truck with ballast on the back to give traction.  The truck would drive forward and the bucket would go up. I think the concrete was then poured into wheel barrows and moved where needed."

Thanks, Ken!

Original post:

Last night's blood moon brought crowds to the Mt. Wilson Observatory. The parking lot is always open and it's a good spot for viewing the night skies. The Observatory itself closes to the public at 5pm but last night the staff left the gate open and people wandered, enjoying the grounds. Despite all the light from the city below it's still very dark up here, and fun to snoop. Everyone had a good time even though throughout most of the evening the moon demurely hid its heavenly body behind a tantalizing veil of clouds.

One does not get a good photo of a moon, even a giant blood moon, with an iPhone. You will find all the gorgeous shots you could possibly want elsewhere on the web. So for my last post from the mountain, I thought I'd show you things you won't find elsewhere. Above, that's a giant old bucket thing (technical term) behind the Monastery kitchen. Something from an old well? Chili cooker? The rim of the bucket came up to my waist.

Here's a view from a second floor window in the Monastery. I don't know what it is. You tell me. I like it in black and white. (Ken says these are "...old fashioned heat vents. Some times used on water heaters, or stove flues. I would have to look in the building to see if they are still in use. My guess is no.")

A better view of that drain we saw the other day.

Science moves on, always looking for the newest discovery. That's what science must do. Funding follows the biggest telescope, the latest thing. For the first half of the 20th century and beyond, Mt. Wilson Observatory was the cutting edge of astronomical research, but larger telescopes are now the norm. Important work is still done here (the Solar Telescopes, the CHARA Array, etc.), but the Observatory is in transition. What will it become? A museum of astronomical history? An Observatory? An educational facility? All three? What do you envision?

I'm not sure what's in Mt. Wilson's future, but I know what's in its past: major scientific discoveries that changed the world's understanding of itself and its place in the cosmos. Like Hubble's glass plate proving the expansion of the universe (a discovery he made here, using the 100-inch Hooker Telescope), it's impossible to place a monetary value on that.

I have been more than fortunate to experience this magical place in a private way. There's a lot here to do, see and think about. My endless thanks to those who made it possible.

Come visit, then let's talk some more.

Saturday, May 30, 2015

Mt. Wilson Observatory: A Great Adventure

The grand finale of the Mt. Wilson Observatory tour is the 100-inch telescope. Here, Edwin Hubble worked to discover his theory of the expansion of the universe. Yep. Major important stuff.

Notice anything different about how the roof of this facility opens, as opposed to the roof at the 60-inch I posted about the other day? Our guide, Observatory Superintendent Craig Woods, explained that after the 60-inch was built it was discovered that this vertical opening, as opposed to the horizontal one at the 60-inch, made for a stronger structure. 

By the way, Craig has been known to climb up to the top of the roof. 
But he's no fool, he gets strapped onto a safety catch.

The 100-inch (that refers to the diameter of the mirror) is a big telescope, though there now larger ones in the world.  

John took this picture of me and Craig at the 100-inch.

He also took a couple of great panoramas of the inside of the telescope housing. Click on these to enlarge. 
They're pretty cool.

This one really shows how big the space is. Craig and I are over on the left. We're looking into a hole in the floor. It's a sort of trap door big enough for a giant to keep his lunchbox in. The Observatory is keeping the top part of the 100-inch telescope there.

The two telescope-looking things here really are scoping devices for the 100-inch. And there are buttons. And stuff. I was just trying to explain Steampunk to Craig when we came upon this.  

I think if any one thing can convey Mt. Wilson's past, present and future importance it's this building, this telescope. Hubble's discovery was seminal. He made it here, sitting on a bentwood chair, measuring the movements he saw in the skies. There may be more powerful telescopes in the world now, but even those still observe what he discovered here.

We met Larry S. Webster, the Site Manager for CHARA, the Center for high Angular Resolution Astronomy, a project of Georgia State University. Larry has been with Mt. Wilson for 37 years. He lives there, with his wife and daughter. (What a childhood! That kid is on a first name basis with every squirrel on the mountain.) Larry told amazing stories about a building in Pasadena that was once part of the Carnegie Observatories. Just before the building was to be torn down, with all the old records in it, Larry went in with a flashlight (because the electricity had already been turned off) and rescued everything he could fit on his truck. He couldn't get it all and some things were lost. But many precious papers, records, and items are now preserved, thanks to him. I hope these will one day be part of a Mount Wilson Museum and archive here on the mountain.

There's a board of directors. They are thinking of ways to keep the place alive. Let's listen for the call and take part when it comes.

For now, join the Friends of Mount Wilson Observatory. Take a day to go on up there. It's a vigorous hike, or a leisurely drive. Have a hot dog, chili, or pie at the Cosmic Cafe. 

 And enjoy your discoveries.



Wednesday, May 13, 2015

Mount Wilson: Science in Transition

The Mount Wilson Observatory was founded in 1904 by George Ellery Hale, who encouraged the likes of Edwin Hubble and who also had a great deal to do with the way Pasadena looks today. Think the city center plaza and City Hall. Think Caltech. Thank you, Mr. Hale.

More than 100 years later, important astronomical research continues at Mount Wilson, especially the CHARA Array, operated by Georgia State University. Don't ask me what it does. I've had it explained to me twice, once by John and once by Craig Woods, and I still don't get it. But it looks cool from above.

Craig Woods, by the way, is the reason John and I got a behind-the-scenes tour. He's our friend and the superintendent at Mount Wilson, the guy with all the keys. He's up on all the experiments, the history, and the equipment at Mount Wilson. Plus he's willing to climb some precarious ladders.

I hope you'll take another look at my May 10th post about Mount Wilson. Here's a further explanation of those photos:

First, that big engine, and its rheostat, power the tool-making shed. 110 years ago, when you got up to Mount Wilson with your mule cart or your Model-T, you weren't about to run down to Flintridge if you forgot your screwdriver. If you needed a tool or a part, you made it. Many of those magnificent old things are still there. Some explain themselves, some don't. Unless you're Craig, then you know what they are.

Near the tool shed is another shed that's a treasure trove of maps, blueprints and files. There's a small library with early Scientific American magazines and other works. There's an ancient and dusty stand-up grand piano and a pool table that hasn't been used in, I would guess, 20 years.

Off the upper left of this map is the 100 inch telescope. You can see the circles indicating the 60" telescope and the smaller but taller Solar Telescope, which is still in use. The 60" has lately been used for a couple of Hollywood parties. Stars, stargazing. This is an old map so it doesn't show all the buildings you might be familiar with if you've toured Mount Wilson in recent years. Off the pathways to the right, beyond the "no entry" signs, there are some cabins that are not currently in use. Fixer-uppers.

Mount Wilson Observatory is old. Newer, larger telescopes dot the planet. The larger the telescope, the deeper into space an astronomer can study. Although Mount Wilson still has many uses, it's now in a transition phase, becoming a museum. Funding will be needed to preserve all those beautiful blueprints and plans, to maintain those telescopes and historic buildings, to keep it all available so the public can visit and learn about the early days of astronomy.

It's also a place of natural beauty, everywhere you turn, even on the steps climbing up the hillside to the tool shed.

More soon.