How It's Made: Telescopes

[@Lesservector]

Wow, I can now understand as to why a good quality telescope costs so much. Never knew a liquid free electroplating process existed until today.

[@rubiconnn]

It's called physical vapor deposition or sputtering. Applied Sciences has a great video showing him making a device to do it.

[@1.4142]

The thought emporium has some good vids too

[@jeremytheimer7443]

The grinding also takes a long time.

[@mrbaab5932]

Hard to electroplate insulators like glass. Conductors are what can be electroplated like metals.

[@UncleKennysPlace]

@@rubiconnn If you mean the mirror coating, it's just evaporative, the simplest method. Sputtering is quite different.

[@greatPretender79]

Alternate title: How It's Made: telescope mirrors

[@dougaltolan3017]

As far as making mirrors go, that was barely scratching the surface (pun intended)

[@dickJohnsonpeter]

AND DRANGULS! ()

[@nickd3871]

That is the primary component of a telescope. That is "How it works".

[@corncobjohnsonreal]

New how it's made sucks. They're all like this now

[@1islam1]

​@@dougaltolan3017⚠️ God has said in the Quran: 🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 ) 🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 ) 🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 ) 🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 ) 🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 ) ⚠️ Quran

[@puppies.and.pumpkin]

Perfect timing! I was just looking at the new images for the James Webb Telescope

[@CTguy203]

I think they did this intentionally

[@kishascape]

They knew what they were doing.

[@belken117]

That is a beautiful telescope! I had to google it's brand to find it, thank you for uploading this! But kinda wish you also included the tube and secondary mirror made.

[@rickkearn7100]

Ed Ting would probably know, he has a telescope YT channel and is very knowledgeable.

[@belken117]

@@rickkearn7100 Oh yes! Funny thing I've subscribed to his channel, he is indeed very knowledgeable on telescopes! ^^

[@gruffcube]

@@belken117 same

[@mrbaab5932]

Me too.

[@tubedude54]

It's Orion Optics in the UK

[@brianduarte6045]

Poptropica is where my fascination for telescopes began.

[@LTJC70]

Hello all, I worked for Tele Vue Optics many years ago... We built refracting telescopes... Our scopes were built by hand and 1 at a time... If your interested in buying a telescope I encourage you to look up Tele Vue Optics... Back when I built them they were top of the line and I'm sure they have only gotten better!!

[@w3vjp568]

I have a TeleVue Genesis-SDF, beautiful scope. I just wish the lens cell was user-adjustable!

[@filcuk]

Why is the mirror glass shown here so thick?

[@ShubhamRaj-mu8ol]

@@filcuk pressure due to mounting equipment, gravity and temperature changes can deform the mirror shape, and in telescope even fractions of a millimeter of change can make huge difference. The thick glass is more resistant to deformiities.

[@skysurfer5cva]

I have four Tele Vue eyepieces (8-mm Delos, 13-mm Ethos, 27-mm Panoptic, and 41-mm Panoptic). All four are outstanding. I use them with my Celestron C-5+, Celestron CPC-800, and Celestron CPC-1100HD. I once put the $600 Ethos on my $50 75-mm Celestron FirstScope (Galileo Anniversary Edition, which I bought to decorate my home office). The combo actually worked, even though it is impractical. 🙂

[@k.h.1587]

I had a televue 101 and a televue pronto. I had had many televue eyepieces over the years. I had everything stolen in 2018 and had to start over on a shoestring. No more televue refractors, 31 nagler or type 6 naglers and powemates, but I do have a televue paracorr, and old original smoothside 7mm nagler and 32mm plossl. Much less televue than I used to own. I have mostly older meade series 4000 ultrawide eyepieces, older meade series 4000 super plossls, and more modern but excellently executed Chinese clones of the type 5 nagler (28mm UWAN type 82deg) and ethos (20mm XWA), and a couple vixen LVWs and the 24mm explore scientific clone of the 24mm televue panoptic. I previously owned 4 of the meade 5000 swa versions of the same eyepiece, 24, 28 34 and 40mm. But the wide field view of the 31mm nagler in the televue 101 wide field flat field refractor was just insane in dark skies. If I could kill anyone with my bare hands and get away with it, it would be the tweakers that broke into my storage and took it all from me. And they got SO much more than that.

[@nbaua3454]

That final step of electro-magnatic plating blew my mind.. that process should have a separate video for better explanation. I'm still wondering why the heck the person is not wearing any gloves during the manufacturing process. I didn't touched my new mobile screen for almost a week with bare hands and used the stylus to avoid stains on screen.

[@UncleKennysPlace]

Not electromagnetic at all. Simply vaporized metal condensing on the mirror.

[@BLUELEADER78]

If you have never used a telescope, it's definitely something you should look into.

[@andromedach]

over 4k euro, approaching 6k for some models... saving everyone some time

[@davidjacobs8558]

I can afford that, but I live in a city with bad light pollution. I can't afford to go to remote area where there is no light pollution. therefore, it would not be a wise investment.

[@cstalt]

@@davidjacobs8558 Makes sense given all those parts are machined from blanks. Material cost alone is enormous.

[@void_presence]

to be clear, this is for a Cassegraine-type reflecting telescope; i'd say most reflecting telescopes are of the Newtonian type, which has the secondary mirror bounce the light off to a side hole in the tube (rather than back down the tube) which is where the focuser/eyepiece is.

[@noreaction1]

Can you make a video on how optics are made? For example what techniques go into making optics quality glass, and what considerations and calculations are taken for grinding techniques etc.

[@elnogga]

they have. watch?v=xfhjWyAU9Cw

[@SevroAuBarca04]

You should check out Hyugen Optics’ channel he has awesome videos about the subject!

[@dougaltolan3017]

@@SevroAuBarca04 Exactly what I was going to post. 👍

[@customFunctions]

They did, it’s in season 8 ep 4

[@BariumCobaltNitrog3n]

@@SevroAuBarca04 absolutely!

[@alexandersaquapark7090]

Very Beautiful.

[@kickinitwithmydawg]

I would think the workers' hands would be gloved...or at least clean when assembling

[@themechbuilder6171]

its a beautiful telescope! i checked its branding only to find the hefty price it comes with.. i'm pretty sure it is worth it if you have astronomy and photography as your career

[@anon7945]

Finally!

[@tonyrowland9216]

Never ever saw a worker touch even the raw mirror WITOUT GLOVES ON! Must have been a demo with a bad mirror. Best way ever to be shown the exit.

[@TheSquirrel_gaming]

Very interesting thanks

[@tontan1998]

Wow

[@topgear3487]

How It's Made is the best show on Science Channel :D

[@muneebmuhamed43]

You did well by timing this with the official release of the First pics from James Webb

[@arupsarkar3345]

It is believed by west in Bharat we always knew tht sun we revolve around.❤❤

[@seniormahamed7481]

Awesome

[@oldschoolfoil2365]

that big fingerprint on the mirrors surface during assembly is a new constellation

[@geraldmarfoe348]

This is a catadioptric telescope (probably a Schmidt-Cassegrain telescope or a Maksutov-Cassegrain telescope).

[@davidjacobs8558]

it has spokes, not Maksutov.

[@rodenreyes6320]

Classical Cassegrain maybe.

[@nihar1987]

This is the Orion ODK 10, a 10 inch Optimised Dall - Kirkham astrograph. Which itself is an improved version of a Ritchey Chretien telescope. It's nether a Cassegrain not a Maksutov.

[@dougaltolan3017]

@@nihar1987 👍 I hadn't bothered looking up the company featured here... But my mirrors from 11" Celestron SCT are with them right now being recoated....

[@jameslabs1]

Cool. Thanks

[@msc73]

I had one of that

[@karthikraj550]

Thanks

[@rgbii2]

Pretty interesting, though I don't think this is how they made my $110 celestron. :)

[@k.h.1587]

Im guessing that is a corrected dahl kirkham or ritchey chretien design?

[@Bballer252007]

20 mins ago I decided to look into purchasing a telescope, and then this came up.

[@-never-gonna-give-you-up-]

Don't go cheap cuz you will be disappointed

[@luchvk]

My experience is consistent with PB's statement. Though, I haven't used a nice telescope before.

[@-never-gonna-give-you-up-]

@@luchvk I used to have a telescope to try it out, but it was my first one, after looking at all the amazing pictures you can make with a telescope people often forget 90% of those amazing pictures are made with an expensive and known brand telescope. What happens is, people buy a telescope thinking it's expensive enough, only to end up not seeing anything at the level they were hoping to see.

[@luchvk]

@@-never-gonna-give-you-up- I saw a whole lot of nothing. The one I looked through (a while ago at this point) was DOA. That's something that can happen when you don't get something at least decent in quality.

[@Bballer252007]

I was thinking it was going to be about $2,000. I still haven’t had time to research 🔬, but I live on 9 acres lakeside boxed in by the woods and there’s a gully on the lakeside that I assume would make fantastic natural viewing spot. A quick Google search is pointing me towards Celestron, but I need to do more research before dropping $2k.

[@onestepbeyond5221]

Interesting 😃

[@HOOBANGTV]

갖고싶당..

[@Heworldwide]

Just to think how previous telescopes were made without this technology

[@BoogsMcNoogs]

Yeah, badly, those were the days!

[@dougaltolan3017]

Ever since lenses and mirrors were ground by hand, the only improvement has been the bearings on the grinders.

[@brendakrieger7000]

Fascinating🔭🌌

[@xvi811]

hi

[@xvi811]

good comment

[@xvi811]

1

[@13thravenpurple94]

Greeeeat work 🥳 Thank you 💜

[@MakoRuu]

Man, I wish I could afford a nice telescope.

[@Capadapp]

you can

[@Capadapp]

its like under 200 for a great image

[@jeremytheimer7443]

@@Capadapp be careful with under 200 dollars. you can get some great ones but that is the price where hobby killers prevail.

[@Capadapp]

@@jeremytheimer7443 celestron dobsonian, it was my first

[@gruffcube]

Just don't get a powerseeker. I recommend something from the Skywatcher heritage series.

[@EverClayGuy]

Orang yang gagal akan nampak kesusahan pada setiap peluang, manakala orang yang optimis akan nampak peluang dalam setiap kesusahan

[@Heworldwide]

Love it

[@Mountain_Paladin]

I've wished to have a telescope my whole life. That one would be "out if this world"... someday I hope.

[@Mountain_Paladin]

@@meok2 yep I agree I'm 52 and putting one son so far through college my wife I put through college I. I have another son five years out from college. I never went to college I went to fight a couple of conflicts and one war.

[@davidjacobs8558]

telescopes are useless, unless you go to some remote area where there is no light pollution. if you live near cities, you won't see much with telescopes.

[@Mountain_Paladin]

@@davidjacobs8558 the nearest town to me is 40 miles it's population is 1,100 the next city is around 60 miles with a population of 25,000 . My elevation where I go is 4500 ft. It's crystal clear not a sound and 0 pollution.

[@digit975]

They’re not that expensive! You can have a decent astrophotography setup for less than $500, or even less if you buy used. It’s amazing how cheap apochromatic refractor or Newtonian reflector telescopes are nowadays considering how good they are. Heck, an 8” dobsonian is like $250 used and they’re powerful enough to easily see the rings of Saturn.

[@maximus9812]

@@davidjacobs8558Absolutely not true. You can get great views of the moon, planets, binary stars, etc. even with heavy light pollution.

[@jackspicer455]

So cool!

[@artemisnecrosis1094]

Its not that half the telescope production is missing that annoys me. It that fact the worker isn't wearing gloves of any kind.

[@rosetodaro5081]

This was made all wrong. Where the cardboard tube? Where the rubber bands? Where’s the gold star stickers? This thing will never work!

[@tomb7704]

Their CNC lathe operator needs to have a word with them self

[@biffaplayz]

That birds nest on the boring bar was to help polish the poor surface finish

[@luisito6314]

Good one

[@kimbratton9620]

I love 🔭!

[@Cristianoo-y2r]

hi 😮

[@nopeyadayadayada1248]

At 4:38 you can see the lint, hairs and other FOD on the mirrors surface. A semblance of a clean environment when assembling them goes a long way.

[@jtorola]

That's not FOD. FOD stands for foreign object damage and that is not applicable here. For assembly you don't need a clean room as long as you use gloves and proper post assembly cleaning. Especially for this level of telescope

[@nopeyadayadayada1248]

@@jtorola FOD stands for foreign object debris.

[@PankajSingh-sg7ij]

Everything is good but you don't know, in India we know for more than thousands of years that sun is the center of planet system. In Indian system, 9 planets rotate around the sun.

[@greatPretender79]

Also as a machinist, 0:45 gave me diabetes

[@hcic9860]

Go Birds!!! 🦅

[@sandibracko4175]

and photo is stil analog with film winder ;-)

[@qzorn4440]

magically wonderful while spooky, as the primary mirror surface is exposed to all kinds of dirt. 😎 Thank you.

[@milesparris4045]

"Light years" are a measure of distance.

[@AdvanceAU]

Thank you, Captain Obvious.

[@solidzeng]

I don't understand why a mirror with a hole in the middle can be a telescope

[@serpent77]

Basically the primary mirror (the one with the hole) collects light and through it's curved surface reflects and focuses the light on the secondary mirror at the front of the telescope (the mirror they kind of glossed over in the video) that also has a curve to focus the light down to the hole in the primary mirror to the viewer/camera/etc. The light kind of makes an "N" path from the right side and following it all around the telescope body.

[@2Fast4Mellow]

A telescope works similar to a satellite dish. The large outer disc reflects that light back to the small receiver in the middle facing the disc. Using the knobs you change the distance between the outer and inner disc in the same way you can focus the beam of a magnify class on a piece of paper. In the 'ol days you had these film/photo projectors that put a light behind a film and the image was projected on a mirror, than the image of the mirror was reflected on a canvas (or wall). Because of this reflection photo's are shown upside down...

[@John_Ridley]

The area where the hole is wouldn't collect any light anyway, it's in the shadow of the secondary mirror. Keep in mind this is only one of dozens of different styles of scopes. Since they didn't mention a front corrector plate and it has a spider secondary, I'm assuming this is a classical cassegrain or similar. They're actually not very common. The most common types are newtonian, Schmidt-Cassegrain, refractors and Maksukov-Cassegrain, probably in that order.

[@niranpunnz9039]

How microscope ❤️👍

[@jacquelinewalker6357]

kool

[@shimonigmagames]

Now I know

[@8Junio76]

How much is the cost of that telescope?

[@aminkhandrishak6045]

♥️

[@melchristian8876]

👍👍👍👍

[@anonymously241]

How much scope cost? 🔭

[@John_Ridley]

As with any hobby, you can basically spend any amount you want. The scope in this video is pretty darned high end. Just off the top of my head I'd expect it's > $10,000 US. You can get a very nice scope for $500 to $1000 though. "Dobsonian" style scopes are the best value for money. Keep in mind though that good eyepieces are also needed and can double the price.

[@anonymously241]

@@John_Ridley thanks for the info brother 🙏🙏☺️

[@rodenreyes6320]

Just get a good 4" refractor and use at both nightsky and terrestrial viewing.Heavenly bodies at night and "heavenly" bodies at the beach.

[@isisheggs8065]

What a nice telescope I wonder how much it costs

[@jasonrogers1576]

Lol It was known LONG before 400 years ago that the Earth isn't flat and that everything doesn't revolve around it..

[@jacquelinewalker6357]

so stars are just lights are could it be more then

[@elevate32767]

3:43 disturbing.

[@alexandersaquapark7090]

У меня есть Вкусная Рыба заходи. 🐟🐠🐡🐬🦈

[@stevenjones2371]

thats a very expensive one

[@perseoeridano4182]

👏🏻👏🏻

[@RikuWRLD]

“I always wondered how they were made”

[@Chinhnguyen0497]

damn. telescope is something I don't affordable

[@IIIRotor]

was Galileo a Dutchman?

[@alexdelara9858]

2022: £3,625.00 excl. VAT ouch....

[@IIGrayfoxII]

Why are they not wearing gloves when handling the mirror?

[@ferretyluv]

Why not show the secondary mirror being built instead of the testing? That would be more impressive.

[@beb38138]

How It's Made ...James Webb Telescope??

[@sandhillpreppers]

I just bought my first telescope, I put together, but I'm not sure what I did wrong because a can't see thru it 🤔

[@menard518]

which telescope?

[@sandhillpreppers]

@@menard518 ASTRONOMICAL TELESCOPE, ESSLNB...

[@menard518]

@@sandhillpreppers i looked it up and idk which one specifically ur talking about, but the ones i saw are under 100, so your better off just using your eyes or binoculars until you can get something better

[@hinz1]

£3,625.00 excl. VAT ;-D

[@fernandogutierrez470]

They didn't use globes 😥

[@davidjacobs8558]

I saw a video of Canon factory, where they assemble one of their large zoom lenses (like 1000mm size), and the factory workers did not wear globes when they assemble those lenses either.

[@russchadwell]

Opening music change. For the fail.

[@mblaber2000]

This dude should be wearing gloves...

[@omnom2455]

🇵🇸

[@princeindrajitlawlaha7027]

! 💝 💯 👏 🎉 🙏 🚀 👍 🤖 🎅 ✝ 🌝 !

[@ChennypieX12]

No views

[@MasonTheOneLooneyDude]

NOT UNTIL NOW!!!

[@lunatic4861]

Not anymore

[@tontan1998]

Yes

[@wladimirbetcher]

expensive junk

[@trident8872]

ALSI MAKE A VIDEO HOW SPOTTING SCOPES ARE MADE

[@iiiiii-w8h]

why tf does a telescope need three cooling fans? are you overclocking it?

[@astroinfinland6680]

It need to cool down to get the sharpest images.

[@maximus9812]

Differences in temperature between the inside and outside of the scope cause air currents that distort the image. So you want the scope to cool to ambient temperature before use. Closed tube scopes like the one in the video take longer to cool, so the fans help.