It would be really interesting to watch a piece or show about the making of this telescope and it’s history as well as pictures over the years and technology upgrades. Einstein, Hubble, Sagan. Pretty impressive company
Wow, this give me a good starting point for volunteer work I'm doing this summer with the 36" sister refractor at the Lick Observatory near San Francisco,CA. Unfortunately that scope is no longer available to the public for some safety concerns. Thank you, Ken
Too close to massive light pollution from san fran too. I imagine Yerkea suffers from, not only a warped lens but also proximity to chicago. Huge refractor were the big game, a hundred years ago. Now, public outreach.
@@mirzaghalib8659 with such a long focal length the view would be extremely zoomed in, would be looking at a very small patch of sky.. atmospheric distortion limits your maximum resolution.. on many nights the atmosphere limits my 2M telescope so I'm surprised 19M is useable especially at not a very high altitude.
@andygaras especially with eyepieces that top out at 40mm. They need some 60-100mm observatory class eyepieces, like what siebert makes. But I have to say, m13 at the zenith from Palomar mountain in my c11 with 14mm es100 at 200x was one of the best views of it, and 200 attendees at the event got to see it
The telescope is f/19 - at that focal length Tele Vue's superior correction doesn't really matter. The difference will be transmissivity of the eyepieces, which any premium eyepiece is more-or-less equally good at with modern coating tech
Yes most telescopes split Albireo. A challenge is to split the component of gamma Andromeda. I have seen it with a 24inch f/15 Cassegrain and 30 and 50mm oculars. Which is the closest double star seen with this telescope ?
@@kamilmoucka6811 Oh yes, B and C, the components was approximately 0.5" apart. Here is more information on this system of 4 stars. en.wikipedia.org/wiki/Gamma_Andromedae
That's just an ...astronomical (!!!)... amount of inherent power!! He said he starts with a 40mm EP; try to imagine putting a 4.5mm EP WITH a Barlow (!) and visual the Great Red Spot or the Cassini Division like that!! Wow!!
@@joshuafreedman7703 that would be over 8,600x with a .11 millimeter exit pupil lol wayyyyy too much power for even a 40", and way too small an exit pupil to view anything. Too dim to see anything except floaters haha. and dont even get started on seeing conditions... but with a 30 or 35mm at around 550- 650 x, good 1,5mm or so exit pupil on a night of perfect seeing would prob be absolutely unreal
Too bad they are stuck on one manufacturer, since this telescope would benefit from some long focal length eypieces available in 3 and 4 inch. Even a 55/56 plossl would be a good addition, not to mention a 100mm Kellner or similar. At f19 every design is sharp to the edge
Everybody interested in history and how they made this giant telescope can see the following article in "Popular Astronomy" Journal, Vol IV, No. 5; May 1947. Click the following link and see: adsabs.harvard.edu/full/1947PA.....55..227S On the other hand, You can find more information in the observatory pamphlet, which published in 1920 is available at the following link: archive.org/details/yerkesobservator00fros/mode/2up And of course, some extra details and good explanation can be found at the following: en.wikipedia.org/wiki/Yerkes_Observatory
Weird, I clicked on a video to see/learn about Yerkes. But TH-cam must have switched it for a lame Explore Scientific commercial... I get they gave Yerkes the eyepieces but it’s just poor form
Nice video! But the title's a bit misleading; you didn't really go "Inside the World's Largest Refractor at Yerkes Observatory," you went inside Yerkes Observatory and saw the world's largest refractor. ;-)
very sad title. very miss leading title. ill be sure not to buy ES stuff.. click bait for biz is not good .. i would have been more apt to buy ES stuff. if they showed the scope and spoke more on it. and tossed in we use ES EPs .. soo wrongggg
It would be really interesting to watch a piece or show about the making of this telescope and it’s history as well as pictures over the years and technology upgrades. Einstein, Hubble, Sagan. Pretty impressive company
Nah, Earth being destroyed by an asteroid, rouge black hole or GRB sells better than an amazing piece of history that, actually, exists..
Cut the ¨background¨music!
Why is the music just as loud as the people talking?
Wow, this give me a good starting point for volunteer work I'm doing this summer with the 36" sister refractor at the Lick Observatory near San Francisco,CA. Unfortunately that scope is no longer available to the public for some safety concerns. Thank you, Ken
How did you get on at the observatory?
Too close to massive light pollution from san fran too.
I imagine Yerkea suffers from, not only a warped lens but also proximity to chicago.
Huge refractor were the big game, a hundred years ago.
Now, public outreach.
SFO is a safety concern.
This was mainly an advertisement for eyepieces!
Oh, GOD!! How I wish I had the opportunity to go and put my eye to an eyepiece in THAT instrument!
3:27 That view of Saturn is amazing.
im amazed you can see anything at 19m focal length through our atmosphere
how come? can you explain that, please?
@@mirzaghalib8659 with such a long focal length the view would be extremely zoomed in, would be looking at a very small patch of sky.. atmospheric distortion limits your maximum resolution.. on many nights the atmosphere limits my 2M telescope so I'm surprised 19M is useable especially at not a very high altitude.
@andygaras especially with eyepieces that top out at 40mm. They need some 60-100mm observatory class eyepieces, like what siebert makes.
But I have to say, m13 at the zenith from Palomar mountain in my c11 with 14mm es100 at 200x was one of the best views of it, and 200 attendees at the event got to see it
The correcting lens for the LSST is now the biggest lens in the world.
The focal length is 19000mm. I just can't fathom that - would love to see through even a 40mm eyepiece.
Love your products, I have your 10" dob and gotten great views. Any chance you can let me know what that drum track song is in the beginning?
how do you actually view at 450X - like 1000X with seeing conditions
Question is why not go for Tele Vue? I wonder what eyepieces they really do use?
The telescope is f/19 - at that focal length Tele Vue's superior correction doesn't really matter. The difference will be transmissivity of the eyepieces, which any premium eyepiece is more-or-less equally good at with modern coating tech
Nice video Scott !! :)
Yes most telescopes split Albireo. A challenge is to split the component of gamma Andromeda. I have seen it with a 24inch f/15 Cassegrain and 30 and 50mm oculars.
Which is the closest double star seen with this telescope ?
I'm sure you were referring to the splitting of the B and C components of gamma Andromeda. That's right, isn't it?
@@kamilmoucka6811 Oh yes, B and C, the components was approximately 0.5" apart.
Here is more information on this system of 4 stars.
en.wikipedia.org/wiki/Gamma_Andromedae
@@otrondal Currently their distance is about 0.24", which is a real challenge even for a 24 inch telescope.
“Sharp to the edge” at f/20 any eyepiece is sharp to the edge 🙄
What is the focal length of the objective?
19357 mm . It`s in the vid at 2:38 .
Wow! Thank you!
So it's almost F/20 !!!! WOW
That's just an ...astronomical (!!!)... amount of inherent power!! He said he starts with a 40mm EP; try to imagine putting a 4.5mm EP WITH a Barlow (!) and visual the Great Red Spot or the Cassini Division like that!! Wow!!
@@joshuafreedman7703 that would be over 8,600x with a .11 millimeter exit pupil lol wayyyyy too much power for even a 40", and way too small an exit pupil to view anything. Too dim to see anything except floaters haha. and dont even get started on seeing conditions... but with a 30 or 35mm at around 550- 650 x, good 1,5mm or so exit pupil on a night of perfect seeing would prob be absolutely unreal
Irritating percussion track on the music. I thought my hard drive was about to fail.
I know! I wanted to watch the video for its educational value; damn the serenade.
Agree, the background track throughout the entire thing was irritating. Would have been better to have no background music.
Too bad they are stuck on one manufacturer, since this telescope would benefit from some long focal length eypieces available in 3 and 4 inch. Even a 55/56 plossl would be a good addition, not to mention a 100mm Kellner or similar. At f19 every design is sharp to the edge
Music video or telescope video? Choose [only] one.
never ever that damn drum track again please!!!
Everybody interested in history and how they made this giant telescope can see the following article in "Popular Astronomy" Journal, Vol IV, No. 5; May 1947. Click the following link and see:
adsabs.harvard.edu/full/1947PA.....55..227S
On the other hand, You can find more information in the observatory pamphlet, which published in 1920 is available at the following link:
archive.org/details/yerkesobservator00fros/mode/2up
And of course, some extra details and good explanation can be found at the following:
en.wikipedia.org/wiki/Yerkes_Observatory
I wonder how many nights is the seeing good enough to give decent views at 400x?
Really amazing.
Very shameful to have a fantastic observatory take second place to your eyepiece advertising.
Lens sag must be a huge problem
Actually there is no lens sag because the tube is so well engineered. They designers did an excellent job of planning for that very thing.
Explore Scientific oh cool
Weird, I clicked on a video to see/learn about Yerkes. But TH-cam must have switched it for a lame Explore Scientific commercial... I get they gave Yerkes the eyepieces but it’s just poor form
Nice video! But the title's a bit misleading; you didn't really go "Inside the World's Largest Refractor at Yerkes Observatory," you went inside Yerkes Observatory and saw the world's largest refractor. ;-)
TeleVue wasn't used?
Weird...
Distracting music
still, it is interesting !!
The idiotic music was the reason I left this video after 1 minute and 24 seconds.
The "music" is awful and annoying.
who is taking morse code lessons.......?
lol, I was thinking to leave a comment about Morse Code too! heh heh
Add some new paint to it geez
They should have spent a few more bucks and gone with TeleVue.
who is here after reading class 12 NCERT ray optics page 342...????
What a silly annoying tasteless music.. Nice video
very sad title. very miss leading title. ill be sure not to buy ES stuff.. click bait for biz is not good .. i would have been more apt to buy ES stuff. if they showed the scope and spoke more on it. and tossed in we use ES EPs .. soo wrongggg
Sending out an S.O.S
Explore Explore Explore. Click bait for an eyepiece company. And did you HAVE to add that annoying "music"?
Unwatchable due to inane Muzak.
That's creepy