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@4:50 Two millimeters is not "much thinner than human hair". Maybe you meant 2 micrometers? A human hair is about 70 microns (70 micrometers (0.07millimeters)) thick.
@@IrfanA7861 Thank you. I've corrected my typo. And human hair is not 6mm thick. Even a USB cable is only 3 or 4 millimeters thick. Dreadlocks could be about 12mm, I guess ;-)
This is what bugs me about this channel. They make a lot of errors in these more ‘precise’ terminologies, but it’s better hat they be educational to the masses than to be esoteric
@@frankhewitt1986 It's not a good look. If they care about being accurate, then they'd at least have a contact address for supporters to send in error reports. And just having someone else proofread the transcript would be able to flag things like this. It's like they don't even care to be accurate. I don't understand it. After a video is published, it's easy to add a pop-up on the screen when you mis-speak, right? I've seen other channels do this.
I’ve seen enough videos from this channel to understand that they do a decent job of conveying concepts, but they likely don’t do any extra research other than reading a single article before posting a video. Still interesting, you just gotta shut off the part of your brain that really enjoys physics.
@@mwj5368 ELT can, similar to hubble, see SOME near infrared - but the JWST sees most of the infrared spectrum and a little of the visible (to somewhere in the green). they complement, they do not compete.
This video had a number of errors in pronunciation, fact and concept. The creator needs a better editor. It should have been noted that there are three Earth based giant telescopes being constructed: The Giant Magellan Telescope (GMT) with a primary mirror and collecting area equivalent to a 22.0 m (72.2 ft) located north-northeast of La Serena, Chile with a projected first light 2029; The Thirty Meter Telescope its planned location on Mauna Kea, with a projected first light 2029 (protests have stopped work) and the Extremely Large Telescope (ELT) with a 39.3-metre-diameter (130-foot) segmented primary mirror with projected first light perhaps as early as 2028. These telescopes are not in competition with space-based telescopes. Space based telescopes have advantages over Earth based telescopes in frequency sensitivity and ability for very long exposures among other things. Earth based telescopes can be built much cheaper, can be modified and repaired easily and can be constructed much larger than space-based telescopes. They complement each other and offer their own unique advantages.
The first stone of the telescope was ceremonially laid on 26 May 2017, initiating the construction of the dome's main structure and telescope, with first light being planned for 2027.
@@petert3355 Biggest single point was the launch, but the Ariane is better than anything we have at present. Here it's all Musk and SpaceEx Starship. Sunshield is first half, still have to do a lot more. It might work, but in all my years of working in aerospace no one spent so much money on over 300 points of failure and sent it off into space.
@@АнтонДятлов-э5ш Actually the ELT will be using liquid nitrogen and their camera is larger and has finer focus too. This video is several months old and has been run before as well. Astrum channel has a much more factual video than this on the ELT.
@@MountainFisher I'm guessing the cooling serves a different function (reduce thermal noise on the camera sensor) vs the JWST (which does it to prevent IR emissions from the telescope structure itself). For ground-based observatories, it shouldn't be possible to observe in the mid infrared because the atmospheric air itself will be emitting in those wavelengths.
@4:35 "the mirror is less than 2.0 mm thick much thinner than a human hair". The average human hair width ranges from 0.016 to 0.05mm. Now we all gotta ask the question; what else did "InsaneCuriosity" get wrong?
Scott Manley just released a video that would go quite well with this if anyone wants to know a little more about these beasts :~) Good video, quite informative if slightly confusing in parts. I am curious as to how a visible and near-infrared earth based telescope will be able to see further than one based 1.5 million km in space with both the earth and a special heat sheild to block light/heat from its eye. Granted it may give better visible light images than Webb but Webb doesn't go there so....
I am particularly looking forward to the results of direct imaging of “nearby” exoplanets, and of the detailed study of the electromagnetic spectra of these exoplanets in the habitable zones of their parent stars.
I had almost forgotten about this project what with the much shorter timeline for LSST and the regular updates that had been coming from the JWST program.
@@frankhewitt1986 It is called the Dunning-Kruger effect ;) I don't intend to be rude, but less people know, the more confident they are, see anti-vaxxers ;)
The JWST will easily outperform that monster of a telescope in terms of its infrared detecting unless they plan on adding a super cooling system to it. The JWST's infrared detectors are running at only 7 Kelvin which means no matter how big that mirror gets the JWST will be able to better study more distant objects.
The cooling makes you gain a little bit of sensitivity, but the difference between a width of 6m vs 40m is so huge that the ELT remains x20 times sharper. This is open data...everybody can check. The JWST development went wrong and took 30 years. This is why you find yourself in the situation where the next generation ELT, almost coming, makes it look average compared to its cost. It would have been a different story if JWTS was delivered in 2005-2010. 🤷🏻♂️
This comment is hilarious. JWST cannot 'outperform' the ELT based on this criteria. These observatories serve different purposes and they will work together like Hubble/Spitzer did prior.
I know what you meant ("in terms of its infrared detecting") the radiant heat from Earth will blur out sensitive infrared signals JWST will be able to detect.
Only one of four spectrometers detectors will be cooled to 7K. In terms of image resolution the ELT will easily do better than JWST st near IR wavelengths.
The JWST instruments have infrared sensitivity range from 0.6 to 28 micrometers. Hubble can observe a small portion of the infrared spectrum from 0.8 to 2.5 micrometers. ELT has a similar near-infrared range to the HST of 0.47 to 2.45 micrometers. It should be realized that it is impossible to observe on Earth too far into the infrared because the atmosphere and telescope themselves emit infrared radiation. The entire JWST will be cooled down to near absolute zero to mitigate this instrument pollution. The JWST will be able to see further back in time than any before it. In this regard it is complementary and superior to the ELT.
The ELT is south of the Equator because it points towards the Centre of our Milky Way Galaxy! The large telescopes in Hawaii point outward to just a small fraction of the Milky Way Galaxy. The Earth is 26,670 light years from the centre of the Milky Way. The radius of the Milky Way is 52,850 light years. If it helps get a round dinner plate, put a speck of something about half way from the centre to the outer edge. All the area from the speck to the edge is what the Hawaii and other north of equator telescopes can see... All the area from the speck to the centre to the edge on other side, apx 75% of the Milky Way are 'potentially' visible from telescopes South of the Equator. It is this percentage of the area of the Milky Way plus the fact this 75% has 99% of the solar system of the Milky Way (the centre has greater density) - why there are far more telescopes South of the Equator than North of the Equator. So it is more bang for euro to build telescopes that can see the greater density of the 100-400 billion stars in the Milky Way. We can not see everything due to obstruction of dust and other stars being so dense... the stars behind are obscured until galactic rotation moves objects into view and others out of view. The potential to view 99% vs 1%... is why the world's 26 largest telescopes (with apertures of 4m or larger), only 4 are in Hawaii and 2 are in the Canary Islands... the rest are South of the equator.
@@linyenchin6773 ruclips.net/video/2vuMzGhc1cg/видео.html You are welcome to watch this and return, and repeat the same comment if you still are totally convinced that your idol will "clear it away".
Like micrometers. A human hair is about 50-80 micrometers in width. So I’m guessing they meant the mirror was polished from 35um to less than 2um. Hence why it’s so malleable and able to be used for adaptive optics
@@SoulDelSol I did not infer this from his statement at all. The facility does have smaller auxiliary telescopes that can move about the area but certainly the networking of these scopes (for interferometry) could be explained better than 'mobile.'
They are mobile as they can rotate. You might be thinking of a zenith-style telescope, where the focus is only straight out of the Center of construction. All four of the telescopes move in conjunction and act as a much larger viewing area than the combined surface areas of all 4 summed.
@@frankhewitt1986 Every modern telescopes tilts and rotates in order to work properly. But they're not mobile. They are stationary. The auxiliary units move about the pad when used in interferometry. Maybe that's what he's getting at.
Thai is true, but it is a series of radio telescopes. This video would be more accurate to calls this the largest single aperture visible light scope. The biggest single aperture currently is FAST which is a 500m diameter radio in China
There were several mistakes in the video, one of which stated the same frequencies I think. Webb looks far more into the IR, which is blocked by the atmosphere and in addition air is hot on its own, so it would trample any cold readings.
A human hair is 0.10 to 0.20 millimeters, a millimeter is .03937 of an inch and a human hair ranges from .003 to .008 of an inch. So they lose in either system.🤣😂
What i most dislike about humans is that they listen a stupid afirmation and they keep repeating it without any knowlege about it,just like the parrots do,just to look smart. Now ,with the complete constellation of satellites,the chance for a satellite to pass between a star and the telescope is less than 1 in 10 years and would eclipse it for about 20 miliseconds. As for the ,,trash'' the satellites are on low altitude,being designed to fall and burn into the atmosphere when they are out of service. Are you satisfied now? For your knowledge ,that afirmation was made by some people who have money from Bezos in their pockets.
@@draculakickyourass than why did NASA and ESA enforce that he reduces the reflection of the satellites? There is no need for these satellites other that high frequency trades Safe some more milliseconds! Then you add some more thousands of these by other companies and here we go.
Elon Musk has the most annoying fan base on the Internet according to the poll from 2018. I see the fanboys are still very strong. Sadly, expectations are every single picture taken by the Vera Rubin telescope will contain multiple satellites from the constellation in the field of view, not to mention the impact on radioastronomy.
JWST is not designed for optical light, so saying that the ELT has more to offer is very misleading, Will the ELT be able to see back in time 13.5 billion years? It also has no Infrared capabilities needed to see red shifted ancient light. After your sketchy intro, I could no listen to any of the rest......
james webb has an 8.4 metres diameter this one 38 meters making up a lot especially with laser adoptics. It sees more in the narrow visable spectrum of light compared to James Webb but can't see in the infrared like JWST as the infrared from earth and our warm atmosphere just whitewashes everything in that spectrum.
You’ve literally missed the main point of adaptive optics and the wavelengths that it’s designed to view in. It will be on par with JWST for more near-object targets, and the benefit is that there’s no time limit on its life span. JWST will exceed it greatly on very long/old targets that are 13+ billion ly old
Adaptive optics can mach the space intruments these days. Not to mention it does not take 20+ years to build and launch it. The cost is more like 1-1.5 bln EUR, instead of 10 bln.
Spends about 2 minutes to just say "large mirrors are heavy and deform due to gravity." Good information, but the narrator talks likes he's talking to idiots.
“Will be ground down to 2mm, much thinner than a human hair.” Lol, off by factor of about 200! Human hair is much thinner. Also: It hurts to hear the way the narrator says Mauna Kea. Entertaining but sloppy.
Dude you keep making dumb typos and make mistakes in your content. You say “active optics” then in the next breath call it “adaptive optics.” Proofread your content.
There were multiple mistakes in the video but that that wasn't one of them. Active and adaptive optics are two different technologies, former corrects for warping in the mirror due to gravity and the latter is used for correction due to the atmosphere as explained in the video.
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The background music was absolutely beautiful and subtle. Wish I had a link to it. Very relaxing.
I am perpetually amazed by adaptive optics. An absolutely amazing technology.
@4:50 Two millimeters is not "much thinner than human hair". Maybe you meant 2 micrometers? A human hair is about 70 microns (70 micrometers (0.07millimeters)) thick.
He didn't say Milliliters, he clearly said Millimeters, and normal hair thickness is around 6 to 12 Millimeters.
@@IrfanA7861 Thank you. I've corrected my typo. And human hair is not 6mm thick. Even a USB cable is only 3 or 4 millimeters thick. Dreadlocks could be about 12mm, I guess ;-)
@@GregConquest ahh I stand corrected, human hair has thickness from 0.06mm to 0.12mm. Thanks
This is what bugs me about this channel. They make a lot of errors in these more ‘precise’ terminologies, but it’s better hat they be educational to the masses than to be esoteric
@@frankhewitt1986 It's not a good look. If they care about being accurate, then they'd at least have a contact address for supporters to send in error reports. And just having someone else proofread the transcript would be able to flag things like this. It's like they don't even care to be accurate. I don't understand it.
After a video is published, it's easy to add a pop-up on the screen when you mis-speak, right? I've seen other channels do this.
Jwst isn't a full range visible light telescope tho so they won't really be competing
I’ve seen enough videos from this channel to understand that they do a decent job of conveying concepts, but they likely don’t do any extra research other than reading a single article before posting a video. Still interesting, you just gotta shut off the part of your brain that really enjoys physics.
Can't they interoperate or observe if in the infrared and other spectrums the JWT will observe with?
@@mwj5368 ELT can, similar to hubble, see SOME near infrared - but the JWST sees most of the infrared spectrum and a little of the visible (to somewhere in the green).
they complement, they do not compete.
"That's no telescope. It's a space station."
Actually. It's just a telescopes.
This video had a number of errors in pronunciation, fact and concept. The creator needs a better editor. It should have been noted that there are three Earth based giant telescopes being constructed: The Giant Magellan Telescope (GMT) with a primary mirror and collecting area equivalent to a 22.0 m (72.2 ft) located north-northeast of La Serena, Chile with a projected first light 2029; The Thirty Meter Telescope its planned location on Mauna Kea, with a projected first light 2029 (protests have stopped work) and the Extremely Large Telescope (ELT) with a 39.3-metre-diameter (130-foot) segmented primary mirror with projected first light perhaps as early as 2028. These telescopes are not in competition with space-based telescopes. Space based telescopes have advantages over Earth based telescopes in frequency sensitivity and ability for very long exposures among other things. Earth based telescopes can be built much cheaper, can be modified and repaired easily and can be constructed much larger than space-based telescopes. They complement each other and offer their own unique advantages.
Completely agree. This channel is lazy.
At the beginning of the video, 0:15, he says, "it will be equipped with with an optical lens more than 39 meters in diameter"
lens?
"less then 2mm thic, much less then human hair" that is a mistake one EVERY level,
Can’t wait to see the images. Pluto is still the 9th planet btw.
Thanks!
Thank you so much Keith for the donation! ❤
The first stone of the telescope was ceremonially laid on 26 May 2017, initiating the construction of the dome's main structure and telescope, with first light being planned for 2027.
JWST will not cover full visible light, so it is not competing with ELT. JWST will work in infrared spectrum.
You made one minor error, the JWST will not work at all. 🤣
@@MountainFisher care to provide proof to back up your claim?
@@petert3355 Over 300 single points of failure.
@@MountainFisher Yeah, but not a single one of them has failed yet.
More importantly, the BIG worry, the Sun shield, is fully deployed.
@@petert3355 Biggest single point was the launch, but the Ariane is better than anything we have at present. Here it's all Musk and SpaceEx Starship.
Sunshield is first half, still have to do a lot more. It might work, but in all my years of working in aerospace no one spent so much money on over 300 points of failure and sent it off into space.
If it can see only as far into the infrared as the NEAR infrared then how will it supposedly image the first stars, as Webb will be able to do?
Defenatly NO...web is worki g in cryogenic temperetures
The ELT will be a good way of validating the JWST data that we'll be getting soon.
Belo horizonte
@@АнтонДятлов-э5ш Actually the ELT will be using liquid nitrogen and their camera is larger and has finer focus too. This video is several months old and has been run before as well. Astrum channel has a much more factual video than this on the ELT.
@@MountainFisher I'm guessing the cooling serves a different function (reduce thermal noise on the camera sensor) vs the JWST (which does it to prevent IR emissions from the telescope structure itself). For ground-based observatories, it shouldn't be possible to observe in the mid infrared because the atmospheric air itself will be emitting in those wavelengths.
Well I hope I'll still be around to see it. Living in this crazy world... 🤔
@4:35 "the mirror is less than 2.0 mm thick much thinner than a human hair". The average human hair width ranges from 0.016 to 0.05mm. Now we all gotta ask the question; what else did "InsaneCuriosity" get wrong?
Scott Manley just released a video that would go quite well with this if anyone wants to know a little more about these beasts :~) Good video, quite informative if slightly confusing in parts. I am curious as to how a visible and near-infrared earth based telescope will be able to see further than one based 1.5 million km in space with both the earth and a special heat sheild to block light/heat from its eye. Granted it may give better visible light images than Webb but Webb doesn't go there so....
I am particularly looking forward to the results of direct imaging of “nearby” exoplanets, and of the detailed study of the electromagnetic spectra of these exoplanets in the habitable zones of their parent stars.
I'll need to hold off on getting one until they go on sale.
I had almost forgotten about this project what with the much shorter timeline for LSST and the regular updates that had been coming from the JWST program.
an optical lens of 39 meters? really? It's a mirror, not a lens!
@@frankhewitt1986 It is called the Dunning-Kruger effect ;) I don't intend to be rude, but less people know, the more confident they are, see anti-vaxxers ;)
Hey, haven't we been here before, with the ELT?! But l ordered a BLT - they just taste better! '🍔'!
The JWST will easily outperform that monster of a telescope in terms of its infrared detecting unless they plan on adding a super cooling system to it. The JWST's infrared detectors are running at only 7 Kelvin which means no matter how big that mirror gets the JWST will be able to better study more distant objects.
The cooling makes you gain a little bit of sensitivity, but the difference between a width of 6m vs 40m is so huge that the ELT remains x20 times sharper. This is open data...everybody can check. The JWST development went wrong and took 30 years. This is why you find yourself in the situation where the next generation ELT, almost coming, makes it look average compared to its cost. It would have been a different story if JWTS was delivered in 2005-2010. 🤷🏻♂️
This comment is hilarious. JWST cannot 'outperform' the ELT based on this criteria. These observatories serve different purposes and they will work together like Hubble/Spitzer did prior.
I know what you meant ("in terms of its infrared detecting") the radiant heat from Earth will blur out sensitive infrared signals JWST will be able to detect.
Only one of four spectrometers
detectors will be cooled to 7K.
In terms of image resolution the ELT will easily do better than JWST st near IR wavelengths.
The JWST instruments have infrared sensitivity range from 0.6 to 28 micrometers. Hubble can observe a small portion of the infrared spectrum from 0.8 to 2.5 micrometers. ELT has a similar near-infrared range to the HST of 0.47 to 2.45 micrometers. It should be realized that it is impossible to observe on Earth too far into the infrared because the atmosphere and telescope themselves emit infrared radiation. The entire JWST will be cooled down to near absolute zero to mitigate this instrument pollution. The JWST will be able to see further back in time than any before it. In this regard it is complementary and superior to the ELT.
The ELT is south of the Equator because it points towards the Centre of our Milky Way Galaxy!
The large telescopes in Hawaii point outward to just a small fraction of the Milky Way Galaxy.
The Earth is 26,670 light years from the centre of the Milky Way.
The radius of the Milky Way is 52,850 light years.
If it helps get a round dinner plate, put a speck of something about half way from the centre to the outer edge.
All the area from the speck to the edge is what the Hawaii and other north of equator telescopes can see...
All the area from the speck to the centre to the edge on other side, apx 75% of the Milky Way are 'potentially' visible from telescopes South of the Equator. It is this percentage of the area of the Milky Way plus the fact this 75% has 99% of the solar system of the Milky Way (the centre has greater density) - why there are far more telescopes South of the Equator than North of the Equator.
So it is more bang for euro to build telescopes that can see the greater density of the 100-400 billion stars in the Milky Way.
We can not see everything due to obstruction of dust and other stars being so dense... the stars behind are obscured until galactic rotation moves objects into view and others out of view.
The potential to view 99% vs 1%... is why the world's 26 largest telescopes (with apertures of 4m or larger), only 4 are in Hawaii and 2 are in the Canary Islands... the rest are South of the equator.
So 2mm is less than a human hair??????? Ummmmmmm, no.
Maybe Wookies.
Less than a dreadlock of human hair
two button meme:
1st button: Atmospheric turbulence
2nd button: Rogue micrometeoroid
Too bad, Elon Musk will ruin the sky with space trash
No, he will clear it away. Why so shortsighted? You must be like the creature that orates this video; breathing through its mouth instead of its nose.
@@linyenchin6773 yep. So clear that the Chinese are yelling about the near misses to their space station by his satellites.
with enough raptor engines he could put that big telescope in space
Yes the thousands of internet satellites is not a good idea at all
@@linyenchin6773 ruclips.net/video/2vuMzGhc1cg/видео.html
You are welcome to watch this and return, and repeat the same comment if you still are totally convinced that your idol will "clear it away".
2mm thick is much, much thicker than a human hair. Did you mean to say micro meters? If so, the symbol is um
Yeah, there are a few mistakes in the video.
This narrator would make an excellent robot
at 4:56 you cay a 2mm thick layer , , thinner than a human hair ???? , did you mean nanometers ????
Like micrometers. A human hair is about 50-80 micrometers in width. So I’m guessing they meant the mirror was polished from 35um to less than 2um. Hence why it’s so malleable and able to be used for adaptive optics
Can it view earth like planet ?
3:11 looks amazing
There are several factual errors in this video. Not so good for educational content. I kindly ask for improvement.
I love how he called the VLT a set of mobile telescopes
Dang, telescope is surely a hot topic nowadays.. what's the point of space telescope then? Is it obsolete?
Ot obsolete, complimentary.
It would be nice to have something to show my struggle was worth the immensity of it all
ELT makes me hungry for a Bacon Lettuce and Tomato Sandwich.
The VLT is not a set of four 'mobile' telescopes. They are gigantic, 8 meter telescopes. They do not move lol
I think he meant mobile in that they rotate to create one unified image?
@@SoulDelSol I did not infer this from his statement at all. The facility does have smaller auxiliary telescopes that can move about the area but certainly the networking of these scopes (for interferometry) could be explained better than 'mobile.'
@@EricMalette good point
They are mobile as they can rotate. You might be thinking of a zenith-style telescope, where the focus is only straight out of the Center of construction. All four of the telescopes move in conjunction and act as a much larger viewing area than the combined surface areas of all 4 summed.
@@frankhewitt1986 Every modern telescopes tilts and rotates in order to work properly. But they're not mobile. They are stationary. The auxiliary units move about the pad when used in interferometry. Maybe that's what he's getting at.
"these informations"?? Who's narrating this?
Computer voice I'd guess.
I hope it can find all my mismatched socks and gloves.
IMO they should have called it the BFT .
Nice visuals
Why not just make a telescope with a mirror 1 km in diameter just get on with it already you know you want to 😂
Correction- two millimetres is NOT thinner then a human hair, ie one millimetre is the thickness of a dime.
Good stuff
Superb video!
By 2030.. planet 9/X will be discovered.. can't wait for the ELT to start looking for all objects on our solar system...
Technically the event horizon telescope is the largest in the world. Aperture is the size of the planet.
Thai is true, but it is a series of radio telescopes. This video would be more accurate to calls this the largest single aperture visible light scope. The biggest single aperture currently is FAST which is a 500m diameter radio in China
Would be cool if this was put into space
That would be a crazy waste of money
Maybe it will outperform James Webb, until that happens...
@@anthonychan4571 lol it can't outperform Webb they are two entirely different observatories
There were several mistakes in the video, one of which stated the same frequencies I think. Webb looks far more into the IR, which is blocked by the atmosphere and in addition air is hot on its own, so it would trample any cold readings.
ok 2 millimeter is much thinner then a human hair? wow interesting.
Great video !
Mountains don't weigh thousands of tons. They weigh hundreds or thousands of billions of tons.
I like this video its interestyng
It's a mirror, not a lense...
I don't know what world you live in that you think 2 mm's. is thinner than hair. You clearly don't understand what you are even saying.
A human hair is 0.10 to 0.20 millimeters, a millimeter is .03937 of an inch and a human hair ranges from .003 to .008 of an inch. So they lose in either system.🤣😂
Not ET. Not Dark Matter or Energy. More of the same most likely and in more detail.
The question is more, will it see anything with the cloud of SpaceX satellites disturbing the view creating too much trash!
What i most dislike about humans is that they listen a stupid afirmation and they keep repeating it without any knowlege about it,just like the parrots do,just to look smart. Now ,with the complete constellation of satellites,the chance for a satellite to pass between a star and the telescope is less than 1 in 10 years and would eclipse it for about 20 miliseconds. As for the ,,trash'' the satellites are on low altitude,being designed to fall and burn into the atmosphere when they are out of service. Are you satisfied now? For your knowledge ,that afirmation was made by some people who have money from Bezos in their pockets.
@@draculakickyourass than why did NASA and ESA enforce that he reduces the reflection of the satellites? There is no need for these satellites other that high frequency trades Safe some more milliseconds! Then you add some more thousands of these by other companies and here we go.
Elon Musk has the most annoying fan base on the Internet according to the poll from 2018. I see the fanboys are still very strong. Sadly, expectations are every single picture taken by the Vera Rubin telescope will contain multiple satellites from the constellation in the field of view, not to mention the impact on radioastronomy.
39 METER. OMG. And it doesn't break?
"And it doesn't brake?"
Why would it want to suddenly slow down?
Or should you have typed 'break'?
@@fletch9702 Thank you!
Til 2mm is much thinner than human hair
This is 40 odd meters across ...they will get bigger maybe one day 100 meters , 1/4 of a mile 1/2 of a mile....??
Two millimeter thick is forty times thicker that a human hair not smaller!!
THE JWST OUTPERFORMS ELT IN COSMOLOGY BUT WILL BE OVERCOME BY ELT IN EXOPLANET INVESTIGATIONS.
Why do Americans ALWAYS pronounce the word 'mirror' as in 'meer'???????????
JWST is not designed for optical light, so saying that the ELT has more to offer is very misleading, Will the ELT be able to see back in time 13.5 billion years? It also has no Infrared capabilities needed to see red shifted ancient light.
After your sketchy intro, I could no listen to any of the rest......
Well ; okay .
Human hair is about 0.01mm. The mirrors are 50 mm thick. Dude, get your facts straight.
No matter how good it will be, it will never get close to jwst. JWST will always be one step ahead because there is zero atmospheric interference
james webb has an 8.4 metres diameter this one 38 meters making up a lot especially with laser adoptics. It sees more in the narrow visable spectrum of light compared to James Webb but can't see in the infrared like JWST as the infrared from earth and our warm atmosphere just whitewashes everything in that spectrum.
You’ve literally missed the main point of adaptive optics and the wavelengths that it’s designed to view in. It will be on par with JWST for more near-object targets, and the benefit is that there’s no time limit on its life span. JWST will exceed it greatly on very long/old targets that are 13+ billion ly old
Adaptive optics can mach the space intruments these days. Not to mention it does not take 20+ years to build and launch it. The cost is more like 1-1.5 bln EUR, instead of 10 bln.
Spends about 2 minutes to just say "large mirrors are heavy and deform due to gravity." Good information, but the narrator talks likes he's talking to idiots.
😊
Waste of money.
Not increase our "understanding" of the universe.
Need bigger.
Much much bigger.
“Will be ground down to 2mm, much thinner than a human hair.” Lol, off by factor of about 200! Human hair is much thinner. Also: It hurts to hear the way the narrator says Mauna Kea. Entertaining but sloppy.
A little click bait here. You spent 9 minutes of the video telling us how the telescope was built. Maybe you should change the title of the video ??
But, it's currently under construction.. I wonder to what it's images will bring us.
This actually sucked. Numerous basic errors. Downvoted.
yeah- because my hair is 3mm thick -
Insane Curiosity - Is that the same as Insane sloppiness and inaccuracy ?
Just lost respect for this channel -
Dude you keep making dumb typos and make mistakes in your content. You say “active optics” then in the next breath call it “adaptive optics.” Proofread your content.
There were multiple mistakes in the video but that that wasn't one of them. Active and adaptive optics are two different technologies, former corrects for warping in the mirror due to gravity and the latter is used for correction due to the atmosphere as explained in the video.
@@outcastp23 Nice explanation. These two get confused even by people who are into astronomy (at popular science).
I hate these kinds of narrators with a ridiculous voice. Makes the channel sounds gimmicky and unprofessional.
The image is nice the reporter’s voice is so trashy sharp just abuse human being bother my ear!
Too much mouth-breather speech.
Sounds like someone found a new term.
But who controls it im tierd of the edited versions CIA and FBI and NSA controlled stuff is getting old be nice for a change
What?
@@frankhewitt1986 i feel that everything we are allowed to see and know about has been an edited version and not what really exists or not in full
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