The World's Largest Solar Telescope - Daniel K. Inouye

[@LaunchPadAstronomy]

🔴5 Discoveries Parker Solar Probe Made (and HEARD) on the Sun kzbin.info/www/bejne/lZzcqJ-LqbaZgdk

[@AliHSyed]

"it's bright enough to be seen during the day time". I had to 🤔 for a second

[@dogcarman]

The longer I watched, the broader my smile got. You have a most engaging way of talking about astronomy. 👍

[@LaunchPadAstronomy]

Wow, thanks!

[@NatarajSubramanian]

Second that! 👏👍

[@gleysonoliveira802]

Agreed! 👏👏👏

[@TheNasaDude]

"Mom said not to stare at the Sun, because it would burn my eyes. So I built a giant actively cooled telescope just to be safe" Seriously though, those images are mesmerising

[@LaunchPadAstronomy]

"Mama always told me not to look into the eyes of the Sun. But mamma, that's where the fun is." - Bruce Springsteen

[@solidus4prez]

I don't know if it's really your realm, but I think it'd be cool if you went into the manufacturing and calibration of such sensitive hardware, such as the how they got the 2nm tolerance of the primary mirror

[@franklinrussell9791]

Ohhhh 2 NM 10*-9? That is incredible. Such cool tech On Maui!

[@UrbanVanlife]

wow i did not realise just how much engineering goes in to a telescope, that is amazing, like wow , great video buddy .

[@LaunchPadAstronomy]

Thanks mate :) and yeah, solar telescopes need a lot of cooling. This one has something like 7 miles of plumbing.

[@franklinrussell9791]

Good to know its at the top of our own mountain. Haleakala! Really love the granularations. So close to 2022 already.

[@arkan7rb]

thank you from Yemen greetings keep up professor

[@LaunchPadAstronomy]

My pleasure, and thanks!

[@ZeroSpawn]

Can you do a video on the damn people that designed this crazy contraption. Holy hell who thought of using a blade of air to hermetically seal a clean room below a moving reverse flashlight?!

[@LaunchPadAstronomy]

That's a really good idea. My plan is to visit and talk to them in-person!

[@NoPulseForRussians]

When astronomy and foul language meet, we get...you! Keep rockin' Mark J 🤘🏻😂🤘🏻

[@denispol79]

Wow, thanks. Very interesting. One question - how the adaptive optics "knows" how to correct the image? Unlike regular telescopes, that can create laser-excited sodium artificial stars, and track their movement in the atmosphere, which is (I guess) impractical during daytime.

[@LaunchPadAstronomy]

Short answer is I'm not sure and to be honest, I didn't even consider that question :( When I was researching the video, I skimmed some stuff about using a wavefront sensor to work out the distortion and compute the correction, but I never thought to check how they generate a point source. I guess there will be a sequel to this video down the road :)

[@vincentcleaver1925]

Sequel!!!

[@dogcarman]

Yay! More science! Can’t wait.

[@ckdigitaltheqof6th210]

By automatic focus, other angular optics can do a 3 to 6+ focal hair point, to "know," is to adjust to the most densely image appearace, which you could see it always has problems keeping a focus on the Sun corona, changing.

[@franklinrussell9791]

I watched a film about dkist. There is the big mirror which has servos on it adjusting 2000 times a second. Then there is this crazy secondary mirror which must remove the 18 KW of heat focused by the big 4 M mirror. They use air to remove the heat. If all else fails a shutter closes and the mirror is safe from melting. There is no other scope like DKIST anywhere except here. The images are stunning to say the least. Cant wait for more films from DIKIST.

[@Artaresto]

Laminar airflow as dust protection. Now that is cool!

[@DangerDave-e7u]

Always keep your optics CLEAN.

[@antonleimbach648]

As always, great video!

[@LaunchPadAstronomy]

Thanks Anton!

[@newnaturechannel]

This video needs more views!

[@raullopez7648]

I don't know of anyone that could possibly do a better job than you, sir! I am having flashbacks from my Space Physics classes in college. I remember how charged particles, from the solar wind, travel through the magnetic field north-to-south, they also gyrate, and translate around the earth. We wrote a computer program to simulate those 3 motions, and it used to take about 45 minutes to complete, that's when I realized there is much going on here. Thank you for the amazing videos!

[@NomenNescio99]

Can the telescope be used for other tasks during the night?

[@LaunchPadAstronomy]

In principle, yes because they did some testing with night targets. I don't know if they actually will use it at night once it's operational though.

[@ScullyPop]

Now isn't this a fantastic episode. Nothing but the best here.

[@LaunchPadAstronomy]

Thanks buddy :)

[@sundayaito4366]

Hey there christian, thank you sir for the info. Great job as always. Keep safe.

[@LaunchPadAstronomy]

Thanks!

[@patricknelson]

I flew to Idaho to view the corona myself directly first hand during the great American eclipse of 2017 and all I could think was: Wow, our Sun is absolutely incredible. It’s just an average star in a sea of _billions_ of others in just our galaxy alone. It’s easy to take for granted, but the sun is critically important, too. After all, it has supplied the energy necessary for life for _billions_ of years.

[@LaunchPadAstronomy]

We were in Idaho too!

[@patricknelson]

@@LaunchPadAstronomy Nice! Although I saw relatively little of it, it was gorgeous state. We flew into Boise and drove up to Garden Valley to view the eclipse. Coincidentally, bumped into an astronomer there who worked for an observatory down in AZ, too. Might have been Lowell since I think I remember him saying he came from Flagstaff.

[@darthvirgin7157]

went to idaho (near boise) too. ended up going to oregon close to the idaho border at the day of the event. too many great spots taken up by too many people in idaho.

[@NomenNescio99]

If something similar to the carrington event is observed by this or other telescopes, how long time does it take before it hits the fan here on earth?

[@LaunchPadAstronomy]

Depends on the velocity, but I reckon it would take a couple of days given that much mass.

[@NomenNescio99]

@@LaunchPadAstronomy Thank you for the swift answer. As I'm mostly a "the glass is half empty" kind of guy, so when you talk about entering a solar cycle - this is the first thing that enters my mind. But a few days would at least give some time to prepare from having all electronics and power grids fried.

[@4seeableTV]

@@NomenNescio99 Life gets a little better is you're not a glass half-empty kind of guy.

[@NomenNescio99]

@@4seeableTV Tell me about it, I know that very well. But overreacting to a potential danger have been much less costly than underreacting for the most part of humans evolutionary history. It's likely just wind rattling the leaves - but it could have been a sabre tooth tiger. It isn't easy to change your personality - even if you put work into it.

[@pizeblu]

9:54 this looks like a great texture pack for glowstone.

[@astrognosis]

Yeah lol and it should be included with Ray tracing

[@joedasilva134]

Another awesome video. Please keep them coming .

[@dandurkin9735]

Fantastic! Post eclipse, I'm binging videos about the Sun. Thank you for these.

[@uWu-fp2lc]

2:35. . . that Corona joke took me 10 seconds to understand the reference

[@LaunchPadAstronomy]

I got so many 'the Sun has Corona'...'that's where we got it!' comments the last time :)

[@SquirrelASMR]

Yay!

[@LuigiRBedin]

I love your show ❤ Great 👍work Pleasant style and atmosphere 👌

[@LaunchPadAstronomy]

Thank you very much!

[@adamjbond]

I hope the Big Bear Lake solar observatory opens to visitors. I was just walking my dog near there and would love to check it out.

[@LaunchPadAstronomy]

Definitely!

[@charldippenaar8193]

Amazing.!

[@muheniathili5414]

Always amaze by your simplicity and extensive knowledge.. Thank you Sir.. Stay safe..

[@LaunchPadAstronomy]

Thank you so much, and you as well!

[@kevanhubbard9673]

Makes what I was looking at the Sun with today,a 25mm Pocket Borg refractor and Baader Solar film,seem pretty minute!Mind I saw 4 sunspots.

[@LaunchPadAstronomy]

4 spots is pretty good!

[@exorias625]

dont look directly at the sun scientists : HOW ABOUT I DO IT ANYWAY

[@patrickwalsh2361]

“It’s so bright you can even see it during the daytime!” Nice one!🤣🤣

[@jc4evur661]

What are the spikes sticking out of the dome at 6:57?

[@LaunchPadAstronomy]

I'm not sure, but they remind me of static wicks on aircraft to discharge static electricity.

[@cullyx2913]

Fascinating

[@whtbobwntsbobget]

Who else loves how he has a grateful dead scrapbook? When i first saw that, i knew he'd be a great science youtuber. And he is! Our friendly neighborhood astronomer 😊

[@LaunchPadAstronomy]

Thanks :) Mom raised me right.

[@DeBanked]

The detail on those cells, what a time to be alive !

[@jonwatson654]

Christian, you're giving my 6" Ha scope an inferiority complex 😆

[@LaunchPadAstronomy]

lol!

[@highpointsights]

15-17 or so years ago i worked in a machine shop where we spent at least a couple of years making parts for a telescope in Hawaii. Have you any idea what would have been being built at that time?? I'm assuming it would have been something that went on Mauna Kea? I'm finding my interest, like that of lots of people is escalating rapidly. Back then it was just work (our shop specialized in doing parts that nobody else wanted to do because of their complexity and this is SoCal which does have a certain reputation)!!!

[@kriskolstad1712]

How do they know the surface temperature of the sun. I mean if the corona is so much hotter, how can we measure the temperature below the corona?

[@deadgoon2170]

Just wondering where the 4m mirror was manufactured.

[@LaunchPadAstronomy]

It was manufactured by Schott AG in Germany, polished at the University of Arizona, and aluminized at the Air Force Maui Optical Station Mirror Coating Facility next door to DKIST.

[@deadgoon2170]

@@LaunchPadAstronomy That, sir, is a great answer! Thank you.

[@LaunchPadAstronomy]

Thanks. I probably should have mentioned it in the video :)

[@vesawuoristo4162]

Very cool

[@LaunchPadAstronomy]

Thanks!

[@supreetsahu1964]

video unlisted?

[@LaunchPadAstronomy]

Yeah, I screwed up. It's not ready just yet but you're first anyway :)

[@supreetsahu1964]

@@LaunchPadAstronomy amazing video anyway, christian!

[@LaunchPadAstronomy]

It's listed again ;)

[@michaelgian2649]

@8:17: "thickness of a human hair". At what distance? This is an angular measurement?

[@LaunchPadAstronomy]

At the lab's radius. Sorry, I should have clarified that!

[@michaelgian2649]

@@LaunchPadAstronomy Am I expected to know your lab's radius on my own?

[@cristianconrads9109]

When I see all this recording of the sun, I'm curious if they are reproduced at normal speed or is actually running faster?

[@LaunchPadAstronomy]

It’s a time lapse of sorts. DKIST will take ~5 second exposures so no movie will ever be exactly real time.

[@nocturnus6338]

behind him is among us

[@ckdigitaltheqof6th210]

Most would perfer a massive ground telescope on the polar points of the Earths Moon, this would give humanity a super deep and local bi-vision as two super eyes in space.

[@joeyglennon6468]

What materials did they use to get so close to the sun because I didn't think we had anything known to man that could get that close to the Sun and not burn up

[@dziban303]

The Ulysses probe studied the solar polar regions back in the early 90s on an off-ecliptic orbit.

[@LaunchPadAstronomy]

Ulysses was a really cool mission for its day. It was the first over the poles but it lacked cameras and spectrographs. But it took flybys of Jupiter to fling itself over the top. Really cool mission design.

[@vincentcleaver1925]

Gr8, we can see exactly how f@#$ed we are during a CME...

[@KA4UPW]

I saw half a dozen clean room violations in that snapshot!

[@LaunchPadAstronomy]

lol, really?

[@nuclearpasta1850]

ohhhhh Charlie Scheen's got jokes now!!!!! hahahahaha jk love this channel lol

[@TemplarX2]

Why only 4 m? Why not 40 m?

[@KOKOBC]

I went to the telescope and thought I could get a look inside but unfortunately there was a road block so I just took a few picture and left

[@scottdorfler2551]

How many videos are you doing a week? Seems like you're really upping your output lately. Scott - From the mean streets of East Timonium

[@LaunchPadAstronomy]

Ha, thanks. I'm trying to up the cadence.

[@NoPulseForRussians]

Largest non segmented mirror in the world? Or, largest telescope mirror in general? Because I'm pretty sure the Thirty Meter Telescope, the European Extremely Large Telescope and the Giant Magellan Telescope are all 3 much much larger than this Telescope. Correct me if I'm wrong please.

[@LaunchPadAstronomy]

You're right, they're much larger than DKIST. But at 4 meters, DKIST is the largest solar telescope built to date. They could have built an even larger solar telescope, but that generates too much heat do stop safely.

[@zapfanzapfan]

The sun has spots? I thought it wasn't a teenager anymore ;-)

[@commiezombie2477]

Everything in our solar system is in the Sun's atmosphere...

[@KZgun4hire]

At 9:20 you mentioned the sun had a surface!!!

[@LaunchPadAstronomy]

Yes, it does. It's not a solid surface we could walk around on, but rather a layer where light escapes into space. It's called the "photosphere". Cheers!

[@murphmanin]

Stealy in the back!

[@George-pl7dw]

Fred Rogers does astronomy, Kool. What's going to happen when 20,000 internet satellites are flying around in crisscross orbits ?

[@ruthiethemagmacube5390]

What if a bird or other large object falls into the air knife?

[@fullondeep7176]

fella i love you ♥ you fuckin great!

[@jari2018]

So why cant they make telescopes as Intel does its 14nm chips, the 8m +++++ telescope where every + are 1 inch added to the size or as in case of Intel -nothing

[@LaunchPadAstronomy]

I'm not sure if they can make mirrors as thin as Intel's chips and still be able to hold their shape :)

[@jari2018]

even 1 cm or mm would do something

[@nealthomson9505]

Are they just venting all that heat energy or are they going to do something with it. . . Anything. Even just to keep someones coffee warm. . Its a LAB. . Im sure there is someone that would appreciate the energy so they cab do some expriments of their own. . Think out the box bois :) TGC Blessings in abundance to you and all those that cross your path:)

[@LaunchPadAstronomy]

lol, I'm not sure what they are doing with the heat, other than preventing it from melting down the telescope. Which, to be fair, is the top priority!

[@nealthomson9505]

Hi@@LaunchPadAstronomy I agree :) Maybe in the future :)

[@2076649]

The sun's convectional structures looks like human skin.

[@comic4relief]

8:10 Is a human hair a measure of angle?

[@ManuelGarcia-ww7gj]

Doesn't look like gas to me. Looks a lot like lava. Could it be a gas in a liquid metallic state?

[@AliHSyed]

A 13kW beam 🤯🥴

[@Neloish]

Its a death ray, a person could die if they got hit with that beam.

[@AmpleLight]

all this stuff is fine and dandy but average joe does more in his own garage and backyard. You never ever hear about average joe anymore.

[@used369]

Who could possibly think the Sun is gas, or plasma ??? Looks like boiling Liquid Metallic Hydrogen... And watch ejecta fall to the surface with a Splash...

[@johngraham7045]

Interesting. It seems as if the heat is being contained by the suns gravity. It isn't detected because the reaction happens so quick, in such a short amount of time and distance. And that's probably 100% wrong🤔🧐😂🤣🤣

[@fixpacifica]

Why does everything in the US have to named after a politician these days?

[@methylmike]

jokes on point

[@trooper2708]

A great way to see Tesla satellites 😠

[@jayhansen9705]

Where are all the TMT protesters? I guess Mauna Kea is different. I grew up in Hilo. No shortage of xenophobes, bullies and bigots who want all things from off the rock to stay off the rock.

[@LouisEmery]

Why name scientific instruments after a politician who has not really created knowledge or wealth?

[@gleysonoliveira802]

With it, could we finally see apolo's flag on moon's surface, ending the useless belief that man never went there?

[@LaunchPadAstronomy]

Unfortunately, no. It would take a telescope at least 200 m aperture to resolve it. The LRO spotted the Apollo hardware from lunar orbit years ago though.

[@gleysonoliveira802]

@@LaunchPadAstronomy I didn't know that! But I'm gonna check it and share it right now. Thanks a lot! 😀👍

[@LAUS-DEO-HAWAII]

WE WANT ALL THESE DAMNED AND INFERNAL TELESCOPES OFF OUR BEAUTIFUL MOUNTAINS HERE IN HAWAII.

[@GrowlinWillie]

Do you really need to stick in a 1 minute in the middle? Less talking, more video.

[@LaunchPadAstronomy]

I’m not sure what you mean.

[@scottbrower9052]

So cringe.