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NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully

 
Anonymous Coward
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03/17/2022 02:07 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
You mean the images taken of stars being used for alignment? Like the image with 18 copies of the same star? Or the first "mirror selfie?" They all indicated the mirrors weren't aligned yet.

[link to youtu.be (secure)]

"The team behind NASA's James Webb Space Telescope released some of the first unbelievable images from the much-anticipated observatory on Friday (Feb. 11). The main photo, which doesn't even hint at the power Webb will bring to the universe once it's fully operational, shows a star called HD 84406 and is only a portion of the mosaic taken over 25 hours beginning on Feb. 2, during the ongoing process to align the observatory's segmented mirror".

I guess this is just a basic image taken from 1 mirror?
Anonymous Coward
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03/17/2022 02:08 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
[link to youtu.be (secure)]
Anonymous Coward
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03/17/2022 02:17 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
If any part of this NASA fable involves moving anything in the vacuum of space with rocket thrust then it's bullshit bullshit bullshit
 Quoting: Anonymous Coward 81062819


Trust The SCIENCE!!! (TM)

scream

lala
Anonymous Coward
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03/17/2022 02:22 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
If any part of this NASA fable involves moving anything in the vacuum of space with rocket thrust then it's bullshit bullshit bullshit
 Quoting: Anonymous Coward 81062819


So since Newtonian mechanics is bullshit,
I guess Relativity is out of the question,
yes?
Anonymous Coward
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03/17/2022 02:41 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
now let us discover intelligent alien life elsewhere in the universe.
Anonymous Coward
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03/17/2022 02:47 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
More masonic make believe for the dumbed down masses.
Anonymous Coward
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03/17/2022 03:03 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
If any part of this NASA fable involves moving anything in the vacuum of space with rocket thrust then it's bullshit bullshit bullshit
 Quoting: Anonymous Coward 81062819


So since Newtonian mechanics is bullshit,
I guess Relativity is out of the question,
yes?
 Quoting: Anonymous Coward 82506352


No, Newton's laws are correct - it's NASA's shillitary which misquotes him, erroneously applies the wrong formulae, and, displays contempt for the actual science of physical chemistry
Anonymous Coward
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03/17/2022 03:19 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Lol, yeh sure it is, another black deep hole budget from American tax payers money.
 Quoting: Anonymous Coward 80504958


And what should they spend it on then you miserable old c*nt?
Anonymous Coward
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03/17/2022 03:31 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
More masonic make believe for the dumbed down masses.
 Quoting: Anonymous Coward 79654836


Cannot believe that posters like this one are real.
Maybe the site management just invents them to increase the traffic on the thread.
Of which this post of mine is an oblious example.
Anonymous Coward
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03/17/2022 03:33 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
I have lost commercial FM signal two miles away from the tower when going under a highway overpass. But NASA's webb has no problem transmitting high bandwidth images from over a million miles away. Believable.
 Quoting: Anonymous Coward 79336278


It's space, there's very little in the way to disrupt.
Free me

User ID: 46636611
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03/17/2022 03:35 PM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
More masonic make believe for the dumbed down masses.
 Quoting: Anonymous Coward 79654836


Cannot believe that posters like this one are real.
Maybe the site management just invents them to increase the traffic on the thread.
Of which this post of mine is an oblious example.
 Quoting: Anonymous Coward 82324969


Obliviously.
Anonymous Coward
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03/17/2022 04:08 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Youd think NASA would spend the money on a new instrument to PROVE once and for all that the cosmic microwave background is really there. But they don't and won't and never will because it does not exist.
Anonymous Coward
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03/17/2022 04:11 PM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
So they see the CMB super strong near earth but never once see the monopol at l2 and instead just measure the differences in microwave signals across the sky and call that an anisotropy map but if you ask me, just like the soviets said about the original paper that found the CMB near Earth that there was too much thermal emissions from the moon and earth to determine if it really were from the Big Bang. The only way to confirm is to detect the monopol at l2 which they never have.
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03/18/2022 09:24 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
I have lost commercial FM signal two miles away from the tower when going under a highway overpass. But NASA's webb has no problem transmitting high bandwidth images from over a million miles away. Believable.
 Quoting: Anonymous Coward 79336278


Yup. Learn how to calculate a link budget.
Thread: Do you trust the Pluto images to be real? Here is what I don't. (Page 6)
 Quoting: Astromut


The linked describes 300db of signal loss from distance alone.
 Quoting: Anonymous Coward 79336278


What's your point, the signal to noise ratio is still above one. The math checks out. Your refusal to double check the math is not my problem.
astrobanner2
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03/18/2022 09:24 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
The "pictures" generated are of static and pink noise generated by amplifying distortion through a bunch of amplifiers.
 Quoting: Anonymous Coward 79336278


False.
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03/18/2022 09:26 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
 Quoting: Anonymous Coward 71425276


Those are not from the James Webb. That's a fake YouTube channel and you fell for it. Show me a link from NASA with those pictures claiming that they are from James Webb. Oh you can't, that's because you fell for a hoax made by a stupid bitch on YouTube.
astrobanner2
Anonymous Coward
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03/18/2022 09:26 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
I have lost commercial FM signal two miles away from the tower when going under a highway overpass. But NASA's webb has no problem transmitting high bandwidth images from over a million miles away. Believable.
 Quoting: Anonymous Coward 79336278


Hopefully they have multiple satellites and multiple channels in which to transmit the data. Surely they do… It is the only way that it could work. It works from deep space and Mars. It will work for the JWST also.
Anonymous Coward
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03/18/2022 09:34 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
I have lost commercial FM signal two miles away from the tower when going under a highway overpass. But NASA's webb has no problem transmitting high bandwidth images from over a million miles away. Believable.
 Quoting: Anonymous Coward 79336278


Yup. Learn how to calculate a link budget.
Thread: Do you trust the Pluto images to be real? Here is what I don't. (Page 6)
 Quoting: Astromut


The linked describes 300db of signal loss from distance alone.
 Quoting: Anonymous Coward 79336278


What's your point, the signal to noise ratio is still above one. The math checks out. Your refusal to double check the math is not my problem.
 Quoting: Astromut


I don't think you understand what -300db signal level is. Can you amplify a -300db signal from my electric guitar here on earth? I have stacks of neve preamps.
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03/18/2022 09:56 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
 Quoting: Astromut


The linked describes 300db of signal loss from distance alone.
 Quoting: Anonymous Coward 79336278


What's your point, the signal to noise ratio is still above one. The math checks out. Your refusal to double check the math is not my problem.
 Quoting: Astromut


I don't think you understand what -300db signal level is. Can you amplify a -300db signal from my electric guitar here on earth? I have stacks of neve preamps.
 Quoting: Anonymous Coward 79336278

I understand it better than you do. Path loss alone tells you nothing by itself. You have to finish the calculations and determine the signal to noise ratio. You didn't do that. I did. That's why I'm right and you're wrong.
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03/18/2022 10:26 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
...


The linked describes 300db of signal loss from distance alone.
 Quoting: Anonymous Coward 79336278


What's your point, the signal to noise ratio is still above one. The math checks out. Your refusal to double check the math is not my problem.
 Quoting: Astromut


I don't think you understand what -300db signal level is. Can you amplify a -300db signal from my electric guitar here on earth? I have stacks of neve preamps.
 Quoting: Anonymous Coward 79336278

I understand it better than you do. Path loss alone tells you nothing by itself. You have to finish the calculations and determine the signal to noise ratio. You didn't do that. I did. That's why I'm right and you're wrong.
 Quoting: Astromut


I'll use your calculations, your data. The signal to noise ratio is greater than one at -300db. That can't be amplified without adding more noise than signal. Preamp noise is primarily what is being graphed in space "pictures". Like I said, generate a signal like 440Hz from an electric guitar, drop it to -300db in a lab and see if you can raise it to audible volume. Same pitch?
AstromutModerator
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03/18/2022 10:53 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
...


What's your point, the signal to noise ratio is still above one. The math checks out. Your refusal to double check the math is not my problem.
 Quoting: Astromut


I don't think you understand what -300db signal level is. Can you amplify a -300db signal from my electric guitar here on earth? I have stacks of neve preamps.
 Quoting: Anonymous Coward 79336278

I understand it better than you do. Path loss alone tells you nothing by itself. You have to finish the calculations and determine the signal to noise ratio. You didn't do that. I did. That's why I'm right and you're wrong.
 Quoting: Astromut


I'll use your calculations, your data. The signal to noise ratio is greater than one at -300db. That can't be amplified without adding more noise than signal.
 Quoting: Anonymous Coward 79336278


If it's greater than one than the signal can be received above the noise floor.
astrobanner2
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03/18/2022 10:54 AM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Preamp noise is primarily what is being graphed in space "pictures".
 Quoting: Anonymous Coward 79336278


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.

Last Edited by Astromut on 03/18/2022 10:55 AM
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Anonymous Coward
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03/18/2022 11:27 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
...


I don't think you understand what -300db signal level is. Can you amplify a -300db signal from my electric guitar here on earth? I have stacks of neve preamps.
 Quoting: Anonymous Coward 79336278

I understand it better than you do. Path loss alone tells you nothing by itself. You have to finish the calculations and determine the signal to noise ratio. You didn't do that. I did. That's why I'm right and you're wrong.
 Quoting: Astromut


I'll use your calculations, your data. The signal to noise ratio is greater than one at -300db. That can't be amplified without adding more noise than signal.
 Quoting: Anonymous Coward 79336278


If it's greater than one than the signal can be received above the noise floor.
 Quoting: Astromut


Yes, but that signal travels a distance that contributes 300db loss. That final -300db signal is amplified on earth before being graphed. So take a signal at -10db like any old electric guitar, attenuate it to -300db and amplify it until it is detectable using NASA gear. It doesn't sound right does it?
Anonymous Coward
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03/18/2022 11:32 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Preamp noise is primarily what is being graphed in space "pictures".
 Quoting: Anonymous Coward 79336278


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.
 Quoting: Astromut


The pictures are made up of ones and zeros that are generated on the remote device, then sent out for hundreds of db of loss through distance.

In the case of the JWST, it is looking at stuff further away than pluto, right? So it is amplifying signals that have undergone more than 300db of loss before even transmitting it for additional signal loss.

NASA has been graphing noise for decades.
Anonymous Coward
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03/18/2022 11:34 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
If any part of this NASA fable involves moving anything in the vacuum of space with rocket thrust then it's bullshit bullshit bullshit
 Quoting: Anonymous Coward 81062819


THAT'S RIGHT

HOW CAN ANYONE PUSH AGAINST NOTHING

PROJECT THIS

SATAN IS NOTHING

WE CAN'T PUSH BACK ON SATAN

THEN HE WINS

THE DECEPTION

THE TRICK

IS REAL

THAT IS THE DEFINITION OF THE WORLD AKA SATAN'S KINGDOM
Anonymous Coward
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03/18/2022 11:36 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Preamp noise is primarily what is being graphed in space "pictures".
 Quoting: Anonymous Coward 79336278


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.
 Quoting: Astromut


The pictures are made up of ones and zeros that are generated on the remote device, then sent out for hundreds of db of loss through distance.

In the case of the JWST, it is looking at stuff further away than pluto, right? So it is amplifying signals that have undergone more than 300db of loss before even transmitting it for additional signal loss.

NASA has been graphing noise for decades.
 Quoting: Anonymous Coward 79336278


I'm assuming the satellite (if it's real) is basically like a digital camera. The photo sensor converts light (analog) into a digital file and then sends that digital data over a radio signal back to earth.

Whether or not it's possible to do that over such distances is impossible for anyone here to confirm, not even Astro.
Anonymous Coward
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03/18/2022 11:39 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Preamp noise is primarily what is being graphed in space "pictures".
 Quoting: Anonymous Coward 79336278


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.
 Quoting: Astromut


The pictures are made up of ones and zeros that are generated on the remote device, then sent out for hundreds of db of loss through distance.

In the case of the JWST, it is looking at stuff further away than pluto, right? So it is amplifying signals that have undergone more than 300db of loss before even transmitting it for additional signal loss.

NASA has been graphing noise for decades.
 Quoting: Anonymous Coward 79336278


I'm assuming the satellite (if it's real) is basically like a digital camera. The photo sensor converts light (analog) into a digital file and then sends that digital data over a radio signal back to earth.

Whether or not it's possible to do that over such distances is impossible for anyone here to confirm, not even Astro.
 Quoting: Anonymous Coward 78989291


It's possible to confirm by dropping a wired instrument level signal to -300db and amplifying it back. Analog or digital, use a digital synthesizer keyboard. Sure, drop it to even -100db and bring it back to audible.
Anonymous Coward
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03/18/2022 11:42 AM
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
...


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.
 Quoting: Astromut


The pictures are made up of ones and zeros that are generated on the remote device, then sent out for hundreds of db of loss through distance.

In the case of the JWST, it is looking at stuff further away than pluto, right? So it is amplifying signals that have undergone more than 300db of loss before even transmitting it for additional signal loss.

NASA has been graphing noise for decades.
 Quoting: Anonymous Coward 79336278


I'm assuming the satellite (if it's real) is basically like a digital camera. The photo sensor converts light (analog) into a digital file and then sends that digital data over a radio signal back to earth.

Whether or not it's possible to do that over such distances is impossible for anyone here to confirm, not even Astro.
 Quoting: Anonymous Coward 78989291


It's possible to confirm by dropping a wired instrument level signal to -300db and amplifying it back. Analog or digital, use a digital synthesizer keyboard. Sure, drop it to even -100db and bring it back to audible.
 Quoting: Anonymous Coward 79336278


Digital data isn't affected by noise like analog is. If you send digital data with a lot of noise in the signal, you still receive the exact same data as if it were sent with no noise. Analog is different, you will see that noise in your final data.

With that said, I still doubt whether anything NASA says is legit.
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03/18/2022 01:38 PM

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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
...

I understand it better than you do. Path loss alone tells you nothing by itself. You have to finish the calculations and determine the signal to noise ratio. You didn't do that. I did. That's why I'm right and you're wrong.
 Quoting: Astromut


I'll use your calculations, your data. The signal to noise ratio is greater than one at -300db. That can't be amplified without adding more noise than signal.
 Quoting: Anonymous Coward 79336278


If it's greater than one than the signal can be received above the noise floor.
 Quoting: Astromut


Yes, but that signal travels a distance that contributes 300db loss. That final -300db signal is amplified on earth before being graphed.
 Quoting: Anonymous Coward 79336278

Wrong. The pictures are not graphs of a radio signal. You really are this fucking stupid, aren't you? The signal is received by a giant radio telescope and the math for it was already given. The signal is stronger than the noise, even assuming non-ideal conditions.
So take a signal at -10db like any old electric guitar, attenuate it to -300db and amplify it until it is detectable using NASA gear. It doesn't sound right does it?
 Quoting: AC

For fuck's sakes, A RADIO FUCKING TELESCOPE IS NOT AN AMPLIFIER FOR YOUR OLD ELECTRIC GUITAR YOU GODDAMN FUCKING IDIOT!
astrobanner2
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Re: NASA’s Webb Reaches Alignment Milestone, Optics Working Successfully
Preamp noise is primarily what is being graphed in space "pictures".
 Quoting: Anonymous Coward 79336278


False. The pictures are digital. You are conflating the pictures with the signal from the telescope. By the way dumbass, the path loss I calculated in that example is for Pluto, not the distance to JWST which is much shorter and the path loss is much less.
 Quoting: Astromut


The pictures are made up of ones and zeros that are generated on the remote device, then sent out for hundreds of db of loss through distance.

In the case of the JWST, it is looking at stuff further away than pluto, right? So it is amplifying signals that have undergone more than 300db of loss before even transmitting it for additional signal loss.

NASA has been graphing noise for decades.
 Quoting: Anonymous Coward 79336278


JWST isn't an amplifier for your goddamn guitar, NOR IS IT A RADIO TELESCOPE! It's capturing PHOTONS OF LIGHT YOU FUCKING IDIOT, IT HAS NOTHING TO DO WITH THE PATH LOSS OF THE RADIO SIGNAL FROM IT BACK TO EARTH!
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