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Videos (236) | Sift Talk (6) | Blogs (25) | Comments (277) |
Videos (236) | Sift Talk (6) | Blogs (25) | Comments (277) |
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Telescopes of the future - BBC News
A friend of mine is a PhD student in Astronomy and he sometimes observes at Arecibo in Puerto Rico (a single radio telescope). And his collaboration will generate so much data that it's faster and cheaper to send by mail on external hard drives than through any sort of network!
generating 10x more internet traffic than currently?
messenger (Member Profile)
Your video, Why Do We Put Telescopes in Space?, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
NASA | Hubble Memorable Moments: Tinkertoy Solution
Imagine sitting in that room with the "highest powered" people in the space telescope industry
Webb Backplane Pathfinder Arrives at JSC for Cryotesting
Here's the Webb Telescope's backplane arriving at GSFC:
shagen454 (Member Profile)
Your video, NIKON Camera is a Telescope, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
insane camera zoom
> 2000mm focal length?!
One of my telescopes is 1800mm f/9 native focal length with an 8" front lens, talk about resolution and light gathering. It would be an honor to try it from a central park apartment in New York
insane camera zoom
That's not a camera, it's a telescope that can take pictures.
World's Darkest Material - Vantablack
this will be great in telescopes and lenses
ChaosEngine (Member Profile)
Your video, Hubble Space Telescope fly-through of the Gum Nebula, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.
This achievement has earned you your "Pop Star" Level 12 Badge!
Cops Tazer Horse Thief, Then Beat And Kick Over 50 Times
I would say they exercised too much restraint in that case, i credit them for their restraint, but i wouldn't want things to get far enough to have one of them get shot. Smack the crap out of a fighter with a telescopic baton, by all means, or pepper spray, or tazer.
Interesting though that it was their own gun that ended up escalating the physical confrontation into a firearm confrontation. However with the wild west nostalgia for gun laws over there, i can't see how you could send them out unarmed.
Here's a instance of police showing amazing RESTRAINT before being forced to shoot a civilian for good cause.
3 officers are violently gang attacked by a family of 7+ in a Walmart parking lot. Multiple times the officers are taken to the ground by multiple assailants, but they continue to try only non-lethal means of control for over 3 minutes of getting beaten down, at one point one cop actually kicks another in the head in the scuffle. They only resort to using lethal force when one assailant manages to take a cop's gun and shoots repeatedly, hitting the cop. Only then does another officer use lethal force against that single attacker, with a SINGLE controlled shot, then goes back to non-lethal methods of restraint on the remaining crowd. These officers acted the way I want all officers to act.
There's fairly graphic death, so it's snuff, so I won't sift it, but it can be found here....Warning, violent graphic death.
https://www.youtube.com/watch?v=zv5Cbgn4TOU
Police Detonate Nine Tonne of Seized Fireworks
man, that thumbnail looks like one of the pillars of creation (famous hubble telescope image) - http://www.stuff.co.nz/content/dam/images/1/2/j/2/f/5/image.related.StuffPortrait.238x286.12jmnm.png/1420610142560.jpg
Fairbs (Member Profile)
Actually, since the development of adaptive optics, ground based telescopes aren't obsolete at all. Even without adaptive optics they have their uses, and some interesting science is done with them.
Getting telescope time on a space based telescope (or large ground based telescope for that matter) is quite hard, which limits the things astronomers can do with them.
That makes sense since space is a vacuum that they would test it in a vacuum. For some reason, I was thinking it was a land based telescope. I guess those are pretty much obsolete at this point.
Thanks!
oritteropo (Member Profile)
That makes sense since space is a vacuum that they would test it in a vacuum. For some reason, I was thinking it was a land based telescope. I guess those are pretty much obsolete at this point.
Thanks!
It might help to start with what the Backplane Pathfinder actually is - it's a non-flight replica of the Webb telescope’s center backplane (that link has more info and pictures).
Chamber A allows simulating the cold environment the real telescope will face in space, and is the same vacuum chamber where Apollo spacecraft were tested.
Now, to answer your question: They are testing the test procedures for the real telescope! (source: NASA). I realise that doesn't exactly answer your question, but I haven't found details of the actual tests they plan to run... so as a distraction, here are some more images - http://jwst.nasa.gov/images_backplane.html
Webb Backplane Pathfinder Arrives at JSC for Cryotesting
It might help to start with what the Backplane Pathfinder actually is - it's a non-flight replica of the Webb telescope’s center backplane (that link has more info and pictures).
Chamber A allows simulating the cold environment the real telescope will face in space, and is the same vacuum chamber where Apollo spacecraft were tested.
Now, to answer your question: They are testing the test procedures for the real telescope! (source: NASA). I realise that doesn't exactly answer your question, but I haven't found details of the actual tests they plan to run... so as a distraction, here are some more images - http://jwst.nasa.gov/images_backplane.html
Test it for what?
deathcow (Member Profile)
haha awesome street light fix for TO MUCH LIGHT when trying to use a telescope @ 1 min mark http://youtu.be/rXrcm7DgDbA