Never say never, but... this is a great demonstration of why the 3" format will never gain widespread adoption. Love my 2in 100* EP's. And the ES 30mm 82*.
Have you considered getting one of the lagest available large format CCD filters and having a cell 3d printed for it? The field stop of that eyepiece is significantly less than the inside of a 3" barrel, so most if not all of the field should be unobstructed.
LOL Vlad! Like everything in astro, once you go big everything gets out of hand! That bad boy is big and heavy! Must be awesome though with the 5.5 degree field of view and big exit pupil. Hard to get any better for wide field.
I have telescopes that are smaller than that thing 😀 But great video as usual Vlad. Very informative. Before this I sort of knew that a 3 inch eyepiece wasn't for me, now i'm sure a 3 inch eyepiece isn't for me ;-)
I so much want one! Might need a hoist or something to hold it up. Whenever my Tak gets back from being repaired I'll take a serious look at getting one, and of course a 3" diagonal too! Ouch.
When the EP first came out, they didnt have a diagonal for it. I wanted one so badly for the C11 i had back then. And even hoped they might come out with a 40mm 82 and a 50-60mm 68. But there is such a limited market for that. Only because i was unable to educate the whole world as to why, and believe me i may have came close. 90% of large SCT owners dont understand the basic conceots to get optimal performance for the object/conditions/scope/eypiece/filter/mechanical/optical train. This is a complicated gobby requiring 140+ IQ and a good bit of aspergers to fully maximise. And the problem is, when you are that (especially when you hadn't becoame aware of the aspergers part), being able to communicate effectively enougg with people, especially those who are in positions to be a barrier to your success and advancement, it is the ultimate in irony.
@@juliusklugi7430 really? Maybe it is just that you lack the understanding to know what I am talking about. Low intelligence people tend to think they understand something they know little about. It is called the dunning Kruger effect, and I have enough understanding and experience in this topic to not fall under that category. So would you like to explain where I am wrong here?
I don't see why not, but it would only be practical in very slow large observatory scopes that could use the long focal lengths that would be practical, talking 70mm and up. Chanceds are for any scope you are ever going to use, it is nor practical. Tl:Dr. Why? Ps, look at all the 3" and 4" eps to your hearts content at siebert optics, but master the concepts of exit pupil, field stops, and apparent fields first
I have the 9mm 100 degree ES eyepiece and at 79x gives a great fov, it is great for fitting multiple star quaternary systems. I cannot imagine what that 3" 30mm would be like in a 16" f/5 scope at 66x. I'm surprised the top lens you look through isn't larger than it is, I just thought it would be bigger. My astronomy club has a 16" Meade f/10 LX200 that would be awesome in if it doesn't show the sides of the tube. I never thought to ask, I know Maksutovs have a limited fov, I wonder what it would be with a SCT, anyone know?
@@AVTAstro My 9mm 100 degree fov doesn't work in my 127mm Maksutov as it inherently cannot allow a fov much beyond 72 degrees, my 19mm 82 degree fov shows the sides as well. Pretty severe vignetting. I don't have an 8" SCT f/10 to see if an 82 degree fov would work in one, I'm sure it would. I was wondering if a 100 degree fov eyepiece would work in an SCT.
The 16" has a 4" rear cell. No problem as long as you have the diagonal adapted correctly. This would even work down to c11 and m10 which have 3.25" rear cells. The reason people think it won't work is because they are using 2" thread on diagonals or 2" slip in diagonal in the microfocuser as it came strick mounted to the 2" threads. That is what the Peterson eye opener was for
Can't argue with that logic from a practical seance of view! But there are plenty of people that are not considering buying a Lamborghini and still want to see it in action;) I do appreciate the honest feedback though!!!
Never say never, but... this is a great demonstration of why the 3" format will never gain widespread adoption. Love my 2in 100* EP's. And the ES 30mm 82*.
Yeah, even ignoring the high entry price just the weight will make this something that's not commonly used.
@@AVTAstro Entry cost plus the cost to deal with the additional weight if you don't already have a strong enough mount.
@AVTAstro I sure would love to look through one some time...
Seeing how much it takes to get this increased capability… Makes me more content with what I have. Thank you for this.
Yeah its quite a bit just to use one eyepiece...
Have you considered getting one of the lagest available large format CCD filters and having a cell 3d printed for it? The field stop of that eyepiece is significantly less than the inside of a 3" barrel, so most if not all of the field should be unobstructed.
This eyepiece has been used for visual observation through the great 40 inch refractor at Yerkes Observatory. A BIG eyepiece for a BIG refractor.
That would be quite the combo!
LOL Vlad! Like everything in astro, once you go big everything gets out of hand! That bad boy is big and heavy! Must be awesome though with the 5.5 degree field of view and big exit pupil. Hard to get any better for wide field.
Yeah it's a pretty amazing view for sure!
thats one sweet eyepiece 😍
Thanks!
C’mon Vlad. Expected you to find a way to use these in a binoviewer configuration.
I'm totally slipping in my game... I know😅
I have telescopes that are smaller than that thing 😀
But great video as usual Vlad. Very informative. Before this I sort of knew that a 3 inch eyepiece wasn't for me, now i'm sure a 3 inch eyepiece isn't for me ;-)
Thanks for watching! And yeah the 3" setup it quite a bit of $$$ and work to get going.
I so much want one! Might need a hoist or something to hold it up. Whenever my Tak gets back from being repaired I'll take a serious look at getting one, and of course a 3" diagonal too! Ouch.
Yeah, it's a sweet setup, hope you can get one!
When I first saw that eyepiece it was so big that I imagined that one would use both eyes at the same time looking into it.
LOL, almost can...
Newborn baby of a setup
Weight wise with the diagonal that's heavier then all 3 of my newborns! LOL.
When the EP first came out, they didnt have a diagonal for it.
I wanted one so badly for the C11 i had back then. And even hoped they might come out with a 40mm 82 and a 50-60mm 68.
But there is such a limited market for that. Only because i was unable to educate the whole world as to why, and believe me i may have came close.
90% of large SCT owners dont understand the basic conceots to get optimal performance for the object/conditions/scope/eypiece/filter/mechanical/optical train.
This is a complicated gobby requiring 140+ IQ and a good bit of aspergers to fully maximise.
And the problem is, when you are that (especially when you hadn't becoame aware of the aspergers part), being able to communicate effectively enougg with people, especially those who are in positions to be a barrier to your success and advancement, it is the ultimate in irony.
After reading that I’d say it’s you who doesn’t understand much. Of anything.
@@juliusklugi7430 really? Maybe it is just that you lack the understanding to know what I am talking about. Low intelligence people tend to think they understand something they know little about. It is called the dunning Kruger effect, and I have enough understanding and experience in this topic to not fall under that category.
So would you like to explain where I am wrong here?
I will stay with my TV Nagler 31. fits perfect in my TV NP101.
Thats a sweet setup!
North america at zenith in the desert with an OIII
Could they make a Plossl into 3"?
Not into optical design so honestly have no idea. A smarter person than me will need to help with that one😅
I don't see why not, but it would only be practical in very slow large observatory scopes that could use the long focal lengths that would be practical, talking 70mm and up.
Chanceds are for any scope you are ever going to use, it is nor practical.
Tl:Dr. Why?
Ps, look at all the 3" and 4" eps to your hearts content at siebert optics, but master the concepts of exit pupil, field stops, and apparent fields first
I have the 9mm 100 degree ES eyepiece and at 79x gives a great fov, it is great for fitting multiple star quaternary systems. I cannot imagine what that 3" 30mm would be like in a 16" f/5 scope at 66x. I'm surprised the top lens you look through isn't larger than it is, I just thought it would be bigger. My astronomy club has a 16" Meade f/10 LX200 that would be awesome in if it doesn't show the sides of the tube. I never thought to ask, I know Maksutovs have a limited fov, I wonder what it would be with a SCT, anyone know?
Yes SCT's do not have 3" of Lightpath(not sure about the 16"). So there is no real way of using this.
@@AVTAstro My 9mm 100 degree fov doesn't work in my 127mm Maksutov as it inherently cannot allow a fov much beyond 72 degrees, my 19mm 82 degree fov shows the sides as well. Pretty severe vignetting.
I don't have an 8" SCT f/10 to see if an 82 degree fov would work in one, I'm sure it would. I was wondering if a 100 degree fov eyepiece would work in an SCT.
@@MountainFisher I use a 31mm 82° eyepiece, as well as a 13mm 100°, in my C8 and both provide great views with no noticeable vignetting.
The 16" has a 4" rear cell. No problem as long as you have the diagonal adapted correctly.
This would even work down to c11 and m10 which have 3.25" rear cells. The reason people think it won't work is because they are using 2" thread on diagonals or 2" slip in diagonal in the microfocuser as it came strick mounted to the 2" threads.
That is what the Peterson eye opener was for
I use an asi 294 camera as my eyepiece.
You can use an eyepiece for a dust cover lol
Taht will show u more for sure!
are you sure that's not a handgrenade or a weapon disguised as an innocent eyepiece?
LOL.
Too big and heavy to be a hand grenade. More like a 5" naval shell
Being realistic Vlad, how many of your subscribers are likely to even contemplate buying this eyepiece? More of your EAA videos please.
Can't argue with that logic from a practical seance of view! But there are plenty of people that are not considering buying a Lamborghini and still want to see it in action;) I do appreciate the honest feedback though!!!