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Comment: Re:Dunno (Score 2) 267

by Hynee (#38497552) Attached to: Report Condemns Japan's Response To Nuclear Accident
They fucked up by not having adequate backup power systems.

Everything in the generator hall was fine AFAIK except outside power was down and backup generators were trashed by the tsunami. And that was is, there were no better protected generators, no generators that could run from the heat of the reactor, and no plan to fly in working generators. Derp.

Comment: Resolution is just resolution... (Score 2) 203

by Hynee (#35673900) Attached to: Why Russian Space Images Look Different From NASA's
These images look nice, interesting angles. They probably look slick because they've been post resized sharpened, the smaller versions on Gizmodo have been gently sharpened to make them pop a bit, it's a common photographic trick.
Even if you have a sharp 12-24 megapixel image, it can always use some sharpening when it's downsized for the web. If you don't sharpen after downsizing, photographs still look great but not as crisp as they could.
(And yes, if you sharpen the full size image and then downsize, the downsizing obliterates the sharpening done at full size.)

Comment: Re:Video in English (Score 1) 227

by Hynee (#34666880) Attached to: Indian Launch Vehicle Explodes After Lift-Off
The Sr perchlorate injectors of the PSLV (the predecessor to GSLV) go into the 1st stage main engine (the solid), but those plumbing problems were with the GSLV's strap-ons. The PSLV had solid strap-ons, so I would guess they could not steer. The GSLV has liquid strap-ons, so I would guess they don't bother steering the main engine at all.
I didn't read this before my original post, but the GSAT-5P wiki article and linked reference say that the strap-ons stopped responding to commands, and the vehicle was destroyed by range safety. I suspect we're being given an oversimplified version of things there, unless self-destruct is a two stage thing. I think either it lost it's top, then was self-destructed ~10 secs later, or it wasn't self destructed at all and just progressively failed because of aero loads after loss of control of the strap-ons.
I'm not an expert with inside knowledge, I'm just reading the reports and trying to interpret.
Here's a deshaked version of the failure (done by me from ). You can see the vehicle rolls towards the camera, with some yaw to the left, then stage 3 falls off. Then through to stage 1+2 destruction.

Comment: Re:Video in English (Score 5, Informative) 227

by Hynee (#34666134) Attached to: Indian Launch Vehicle Explodes After Lift-Off
So it looks like the GSLV yawed beyond limits, upper stages (I think stage 3 plus payload) broke off (0:34 on video), then stage 1+2 kept going, initially with decreased yaw (it got knocked back on course upon stage 3 separation), but then increasing yaw until 0:45 when stage 2 broke away from stage 1 and the strap-ons broke off too.
The orange cloud at 0:45 should be the hypergolics in the strap-on boosters, I believe that's what caused the orange cloud in the Challenger disaster.
According to the wiki article on the GSLV's predecessor the first stage injects chemicals (aqueous strontium perchlorate solution) into the nozzle to control yaw. I wonder if this has been problematic in the past?
Education

What Objects To Focus On For School Astronomy? 377

Posted by timothy
from the satellites-and-moonbeams dept.
IceDiver writes "I am a teacher in a small rural school. My Grade 9 students are doing a unit on astronomy this spring. I have access to a 4" telescope, and would like to give my students a chance to use it. We will probably only be able to attempt observations on a couple of nights because of weather and time restrictions. I am as new to telescope use as my students, so I have no idea what objects would look good through a 4" lens. What observations should I attempt to have my students make? In other words, how can I make best use of my limited equipment and time to give my students the best experience possible?"

Comment: Re:Should be (Score 2, Insightful) 572

by Hynee (#30460110) Attached to: Angry AT&T Customers May Disrupt Service

If they change the terms of the contract then those contracts are no longer valid, allowing customers to cancel them prematurely.
Given that those contracts are used to subsidize the cost of the phones, I don't think it's going to happen.

Not really, there is always force majeur. They could use this "digital flashmob" to change their plans permanently, and carriers and ISP's in the US have been wanting to introduce bandwidth caps for a while now...

Either Dan Lyons is a complete fool, or is a man on the inside trying to change the attitude to bandwidth permanently. So who is Newsweek owned by?

I strongly suspect this is a stunt for the corporations, not to humiliate them.

NASA

+ - New Hubble Ultra Deep Field in infrared->

Submitted by Hynee
Hynee (774168) writes "Just in time for Christmas, HubbleSite has released a Hubble Ultra Deep Field redux. The original was in visible light, this version, five years on, is in infrared (1.05, 1.25 and 1.6 um).

The observation is in support of the upcoming JWST which will observe exclusively in infrared, but the newly installed WFC3 does seem to provide some extra resolution over the 2004 visible observations with WFC2.

All the mainstream media has picked up on this, but strangely not even a tweet from NASA or any of its centers. (There's been one tweet in the last 12 hours, I wonder if they're reviewing their tweeting policy. Maybe they finally decided their tweetups were dumb. No text releases either, maybe too close to the holidays.)

Good luck in comparing observations, this new release covers a region about 70% x 70% of the original, aligned with the top left corner (the North corner)."

Link to Original Source

"When the going gets weird, the weird turn pro..." -- Hunter S. Thompson

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