Cryogenic Truck Services Remote Telescopes 38
coondoggie writes "Moving a 115-ton telescope down a mountain and 40 miles on the back of a humongous truck to a servicing facility is no task for the timid. It's a job the caretakers of the Atacama Large Millimeter/submillimeter Array (ALMA), an international astronomy facility, no longer have to worry about thanks to a new custom designed truck that can transport and service ALMA's temperature-sensitive astronomical equipment without removing a telescope from the working array at 16,500 feet in the Chilean mountains."
All is good and well but... (Score:2, Funny)
Watch out for rogue James Camerons! They might write in a nasty accident.
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My wife works at a 3.5 meter telescope. Whenever the mirror (around 3 tons) is lifted out of the mirror cell (the telescope base), her boss, the guy pretty much in charge of the telescope, stands beneath it. His rationale: if the mirror drops, he doesn't want to live to see it.
More on ALMA (Score:5, Informative)
For anyone who wants to know more about the ALMA project as a whole, here's the project's main page:
http://www.almaobservatory.org/ [almaobservatory.org]
(Disclaimer: I work for the project as a staff astronomer).
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Good point...
Actually, before: I work on interstellar dust (& gas).
I suppose if it had been after, I'd have gone for "Dusty66": the final number of ALMA antennas...
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If only it had been 666 telescopes. Pentagrams are a good shape for triangulation, right?
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More info not linked from the article (Score:5, Informative)
Disclaimer: I work for the National Radio Astronomy Observatory [nrao.edu] (the US partner for ALMA).
There's lots more info on the transporters available on the ALMA web site. The two antenna transporters, named "Otto" and "Lore", have their own page at http://almaobservatory.org/en/technology/transporters. [almaobservatory.org] Each transporter actually has 2 500kW power plants (for redundancy) and cooling them at 5km altitude is a major challenge (actually, the datacenter has the same problem -- there's just not enough air up there to remove the heat).
There's lots more pictures of them carrying antennas [almaobservatory.org] there, too.
Finally, a video of the transporter taking the first ALMA antenna to the high site [almaobservatory.org] .
Re:More info not linked from the article (Score:5, Interesting)
ALMA is just insanely awesome. Electrical engineers are a dime a dozen, and there are a reasonable number of good RF/microwave people among them. Among them are the gurus who've made themselves household names in the industry. A few of those people are actually as smart, creative, and well-informed as they think they are.
Then there are the guys who distribute phase-coherent millimeter wave LOs for hundreds of meters over fiber optics, and when they can't buy a mixer at Mini-Circuits that does what they want, they grow one from a freakin' crystal. Those guys all seem to end up at NRAO, even though there's no money in radio astronomy and even less glory.
Respect to the NRAO folks for not only doing some of the most hardcore RF work on the planet and elsewhere, but maintaining open, paywall-free distribution of their R&D papers. This shouldn't be taken for granted nowadays. If you're an EE, you can (and should) lose a whole weekend just reading the ALMA papers.
Re:More info not linked from the article (Score:5, Insightful)
Then there are the guys who distribute phase-coherent millimeter wave LOs for hundreds of meters over fiber optics, and when they can't buy a mixer at Mini-Circuits that does what they want, they grow one from a freakin' crystal. Those guys all seem to end up at NRAO, even though there's no money in radio astronomy and even less glory.
Probably because it's the kind of environment that values damn-good research above all else, be it in RF, astrophysics, astrochemistry or even in IT (where I work). I've gone from job-hopping every 3-18 months at my previous employers to staying at NRAO for 6 years now. And every year at the annual service awards presentation they give out 30 or even 40-year service awards. Sure, there's no money in astronomy and our budget is projected flat for the next what... 5 years or something, but even with that people like it here and stick around.
Proof (IMO) that you can develop and sustain a great R&D culture on a limited budget!
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the meter of awesome on a subject goes like
had somebody read the "dummies" book to you
read the dummies book
wrote the dummies book
had somebody read the "Bible" to you
read the "Bible"
Wrote the "Bible"
is the God of the subject (earliest Authority on the subject and still considered "current")
i would bet that most of these folks rate in the last two brackets
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a bunch of neat transporter stills [eso.org] (and some copy)
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Those are some sweet trucks, but out of curiosity, how the hell to they lift the antenna? Is it the ramps on the back?
I can't see those things on the sides being able to list 115 tons, but pretty sweet.
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There was much good footage of ALMA and it's transporters in action on a recent BBC Horizon (as well as lots of good footage of some of your colleagues suffering through low-oxygen, subzero temperature conditions).
It'll be on iPlayer if you've got access (probably on YouTube if not).
See? This is how you write a headline (Score:1)
Now suppose you don't know what a ton is, what a mountain is, or a truck. How are you supposed to know if it's a task for the timid or not?
Misleading summary (Score:5, Informative)
For those of you wondering: Alma has 2 major work sites. The Array Operations Site (AOS) at 5000 meters elevation. This is a great spot for scientific observations, but also harsh work environment. So there is also an Operations Support Facility (OSF) at 3000m where the antennas are assembled and tested. The antenna transporters, of which are far more impressive than the Front End Service Vehicle, easily move the antennas to the high site. They will also move them around at the high site, much like the different configurations of the VLA (well, now the EVLA).
Actually, moving those antennas gets boring fast - and we want to keep it that way (yes, I am currently working there). The transporter goes at a few KPH - around a fast walk. Or 1st gear, if you insist on car analogies. Moving them around is only a big deal because of the cost in time, manpower, and down time of the antenna. It is about a 1/2 day trip to take an antenna 1-way, so the time adds up fast.
You can find more on the project at our webpage here: http://www.almaobservatory.org/ [almaobservatory.org]
hoping it will all be explained (Score:2)
in the lego kit.
"good job kids" -Darwin (Score:2)
Transporting a telescope that big is a Darwin Award waiting to happen, so this means: No longer a winning incident in the making. "good job kids" - Charles R. Darwin
ALMA in space? (Score:2)
Will we get haunting images from this telescope?
Here's a question... (Score:1)
Why the fuck didn't they build the "Servicing Facility" on site. God Damned PhD's can't fucking do anything right.
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Well, mainly because human beings cannot survive at 5000m without oxygen masks, while 3000m is bearable. The residence halls, laboratories, control rooms, and servicing facilities are at the lower altitude. Even at Mauna Kea (4100m), the telescope control rooms are further down the mountain where out-of-shape astronomers and technicians are less likely to drop dead.
They didn't mention in the article that, in the interest of keeping the drivers alive, those trucks (Transporter and servicer) have pressurize
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This is wrong, human beings can survive just fine at 5000m. I have been at the high site as a visitor, and nobody working there sports an oxygen mask (although oxygen bottles are available in the minivans should the need arise). All you need is a quick test, then you are good to go.
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Well, mainly because human beings cannot survive at 5000m without oxygen masks, while 3000m is bearable.
Dude, people have climbed mount Everest without supplemental oxygen. The highest city in the world is at 5100 meters [wikipedia.org] with 30,000 inhabitants with individuals living much, much higher.
Wrong about Mauna Kea :) (Score:3)
Even at Mauna Kea (4100m), the telescope control rooms are further down the mountain where out-of-shape astronomers and technicians are less likely to drop dead.
All the summit observatories on Mauna Kea (4100-4200m) were built with summit control rooms.
A few of the smaller, older ones have implemented remote operations from their offices in Hilo or Waimea, and most have some remote observation capabilities, but seven or eight of the eleven on the summit have operators on the summit every night they're in use, and summit observations are still common at most of those as well.
The thing further down the mountainside is dining hall, dormitories, etc. We don't operate o
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As others have noted, we can (& do) work at the ALMA high site (AOS) and on the top of Mauna Kea (my last job). However, your point is well made: the 5000m Chajnantor plain is pretty inhospitable for extended periods of time (thin air, extremely dry), hence there are limits on the lengths of high-altitude work shifts.
Also, the thin air at 5000m affects reasoning & judgment, which can be an issue given the size & complexity of the machines. Even on Mauna Kea, I've seen clever people really strugg
Is the truck named... (Score:2)
Mr. Frostee ?
If so, watch your brain carefully.