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[TR] NASA's $2.5bn Curiosity rover: Apple PowerBook specs on wheels - Page 13

post #121 of 183
Quote:
Originally Posted by IcedEarth View Post

Maybe 'absolutely nothing' was an over exaggeration. I was simply expressing that they're not what you need to look for in a camera in respects to quality. People think that more mega pixels equates to a better picture, and I was just stressing that this isn't the case. smile.gif

Actually, megapixels sort of matter, which is why you're going to see a lot of panoramics from Curiosity. More MP means you can resolve more fine detail and print bigger enlargements -- only the former really matters in this scenario.
post #122 of 183
I just saw a video of the mission and literally all of the people in the command center were using mbps
post #123 of 183
Quote:
Originally Posted by perfectblade View Post

I just saw a video of the mission and literally all of the people in the command center were using mbps

No surprise really, they're quite popular in the science and engineering communities.
post #124 of 183
It's nice having a real CLI hiding underneath your pretty GUI...
 
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post #125 of 183
Quote:
Originally Posted by IcedEarth View Post

You're missing the point.
1. Megapixels mean absolutely nothing. A 12MP camera won't give it more of an advantage, it's the quality of the sensor, lens and other important components that matter. 2MP in size is more than enough for scientists to analyse a photograph.
2. Look at Voyager 1, it is near the edge of breaking through the unknown, going beyond the sun's influence. The data is collects could be integral to the way in which the universe actually works, something we can never understand within our own solar system due to the sun's influence. Voyager 1 set off in 1977, that's 35 years ago and it is still working. Just think about that for a second, think about how much of an engineering feat that is. 35 years, 11 billion and 100 million miles, and it hasn't failed. It even has enough power to carry on functioning until 2020-2025.
We can't even guarantee a car for more than three years without it entering a garage for some sort of service or repair. The more technology you force into something, the less reliable it becomes. Also the more technology you put into something, the more power it needs. When you're talking about something that can never be recharged, serviced or repaired by an engineer, lifespan and reliability far outweigh 'performance'.
So to answer your question, yes this is most probably the best they could do so far as to guarantee optimum lifespan and reliability at that point in time. smile.gif

Yeah, I've been kinda keeping up with it here. And some of those picts are really good. My phone camera has a 5 mega pix camera and the photos look nothing like those--way lower quality--waaaaaay lower quality. I'm sure they are using some application to snap several picts and make them into a kind of panorama view image because I down loaded one to view it and it's HUGE: 29185 x 4144.

And I saw the descent re-enactment and, the way it descended down to the surface alone was some crazy sci-fi movie-type descent. Really cool. A true accomplishment, getting all those stages to work like that.

Just strange that some of the tech on board some of these things is kinda old. Like they dug it out of a drawer in a high school science lab or something.

I'm not wearing a tin foil hat, don't worry, it's just being noobish to tech, I like asking about this stuff here because you guys know about the reasoning behind these decisions. thumb.gif
 
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post #126 of 183
Soon they'll be sending terminators up there, or PETMAN O.O
Let's say, 10 years?
post #127 of 183
Quote:
Originally Posted by /\/_|_\/\ View Post

Well if I wanted something to run perfectly, I would run it on a Apple 10 out of 10 times.
Do you program?

If I want performance and flexibilty.... I wouldn't run it on an Apple most of the time.

Quote:
Originally Posted by Nope oO View Post

i don't think I've ever heard someone claim Windows security was more transparent than UNIX before.
Windows security is more transparent than OSX.... not UNIX.



Quote:
Originally Posted by crashdummy35 View Post

Serious question Duckie: What's the difference between that 400 MB Seagate and one with a larger capacity (Seagate or WD HDD)--maybe not available during the Columbia development stage, but, surely available later during it's life? Know what I mean? Was that 400 MB Seagate covered in a Titanium case or something that got cheaped out in later years..?
Is this just another example of $640 toilet seats, $7,600 coffee makers and $436 hammers?
You guys are way smarter than me, that's a fact but: The Curiosity has a 2 megapixels camera on it.... What? That's the best they could do?
For 1 billion dollars I'd bet my left arm OCN could build something better than Curiosity....
Firmware, stablity, and real-world usage for a number of years. If you ever do low-level program, you will sometime find that certain features of an API or application have been removed, "enhanced", or added. Sometimes these changes are even undocumented. In fact, the ATA protocol has changed over the years. These changes may or may not have impact on the software but to do regression testing would literally take weeks. Imagine if they switched and launched with a Seagate Barracuda 7200.11 with the bad firmware?

Industrial, aerospace, military, enterprise, and medical equipment/software costs more than consumer products. The increased costed are due to validation, testing, certification, support, documenation, extended lifecycles, lower tolerances, higher MTBF, etc. Furthermore, the market for these higher requirements is small so companies have lower volumes so therefore price is increased to account for the lower demand. Most consumers don't get this all costs a lot of money.

Sure, OCN might be able to build something better performing.... but it wouldn't survive 5 mins on Mars or be sure it would even work. The cost of these projects is not in the physical hardware but the testing and design. Paying a few hundred of the top 1% minds in the world for 8 years costs money. I use to know a guy who worked at NASA in the 90s.... scary smart people there....



Quote:
Originally Posted by sub50hz View Post

Actually, megapixels sort of matter, which is why you're going to see a lot of panoramics from Curiosity. More MP means you can resolve more fine detail and print bigger enlargements -- only the former really matters in this scenario.
You can just take more higher resolution, narrower field pictures and stitch them together.



Curiosity's Camera Project Manager Explains Why MSL Used "Archaic" 2 MP Cameras
http://www.dailytech.com/article.aspx?newsid=25370
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post #128 of 183
Quote:
Originally Posted by DuckieHo View Post

You can just take more higher resolution, narrower field pictures and stitch them together.
Curiosity's Camera Project Manager Explains Why MSL Used "Archaic" 2 MP Cameras
http://www.dailytech.com/article.aspx?newsid=25370

I assume you meant "lower resolution", and that is precisely why I pointed out the fact you'll be seeing a number of panoramics (stitched images) from Curiosity. And yes, that hard limit of 250Mb per day is sort of an influential factor. I don't understand their "proposed in 2004" rhetoric, though -- 2MP was at the lower end of the scale even then.
post #129 of 183
well they dont make stuff liek they used to, as i hear so often, maybe newer tech just flat out wouldnt last as long

good luck getting Tech support out to mars
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post #130 of 183
Quote:
Originally Posted by sub50hz View Post

I assume you meant "lower resolution", and that is precisely why I pointed out the fact you'll be seeing a number of panoramics (stitched images) from Curiosity. And yes, that hard limit of 250Mb per day is sort of an influential factor. I don't understand their "proposed in 2004" rhetoric, though -- 2MP was at the lower end of the scale even then.

2MP was at lower-end of the scale of consumer sensors. The KAI-2020 is an industrial sensor which means it probably became avaliable after consumer 2MP parts. Furthermore, odds are it provides better range and lower noise than comparable "2MP" consumer sensors. Remember that you can have the same silicon provide something like 4MP high resolution images or 2MP low-noise images.

KAI-2020 specs: http://www.stargazing.net/david/QSI/KAI-2020LongSpec.pdf
Edited by DuckieHo - 8/13/12 at 6:58am
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