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Equipment Discussions >> Eyepieces

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avenger
member

Reged: 01/08/08

Loc: USA

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: faackanders2]
#5513247 - 11/10/12 02:13 PM

Quote:

Humongous. I wonder how many pounds (or Kg) that is?
I know a 3" focuser (& filters) is required, but would it also require a larger secondary mirror. I currently have a 17.5 f4.1 discovery and a 10.1" f4.5 coltour oddessy dobsonians. I look forward to uberwide TFOVs 3" eyepieces would bring. I assume it would be great for M45, M44, M42, North American, Viel, M31/M32/M110, Markarians Chain, and lots of other multiple objects and conjunctions.

Who is the innovator now? Hope I'll be able to afford one.

I was talking with Scott two nights ago. He states the weight of the eyepiece and diag. will be around 8 pounds. He also stated that the eyepiece is for use in refractors. If the optics testing turns out good, than it will be about 6 months before the eyepiece and diag. hit the market. He also stated that JOC (the optics company that made the proto type), does not think there will be a big calling for such an eyepiece from the amateur astronomers. But Scott thinks there will be.

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pbsastro
sage

Reged: 03/21/07

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: avenger]
#5513368 - 11/10/12 03:55 PM

Quote:

I was talking with Scott two nights ago. He states the weight of the eyepiece and diag. will be around 8 pounds. He also stated that the eyepiece is for use in refractors. If the optics testing turns out good, than it will be about 6 months before the eyepiece and diag. hit the market. He also stated that JOC (the optics company that made the proto type), does not think there will be a big calling for such an eyepiece from the amateur astronomers. But Scott thinks there will be.

Scott is the man!

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Arizona-Ken
Pooh-Bah

Reged: 08/31/08

Loc: Scottsdale, Arizona

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5513760 - 11/10/12 10:19 PM Attachment (61 downloads)

A picture of Scott today at the Tucson show:

Arizona Ken

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faackanders2
Pooh-Bah

Reged: 03/28/11

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: Arizona-Ken]
#5514085 - 11/11/12 08:32 AM

Now that's an eyepiece!

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REC
Carpal Tunnel

Reged: 10/20/10

Loc: NC

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: faackanders2]
#5514106 - 11/11/12 08:56 AM

Holy Molly.....look at the size of that thing!

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Shneor
professor emeritus

Reged: 03/01/05

Loc: Northern California

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: REC]
#5514486 - 11/11/12 01:28 PM

Yes, it's massive! And beautiful! Also saw a 3" diagonal.

Clears,

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Blake Andrews
sage

Reged: 07/31/08

Loc: Iowa

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: BillP]
#5514581 - 11/11/12 02:33 PM

Quote:

Quote:

The real question here is how are we going to use these in bino mode?

Easy...one eye at a time

Nagh,

You just put your face up to the eyepiece and open both eyes. Like taking a shower with all those photons. No need for binoviewers anymore!

Cheers!
Blake

Edited by Blake Andrews (11/11/12 02:58 PM)

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Shneor
professor emeritus

Reged: 03/01/05

Loc: Northern California

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: Starman1]
#5514809 - 11/11/12 05:11 PM

Quote:

Alexis talked about angular magnification distortion versus rectilinear distortion, not coma. Coma is an aberration of the paraboloidal mirror, and is more visible and severe the wider the apparent field, so if this eyepiece has built-in coma correction, and you imply it does, then it is unusable in refractors and catadioptrics.
That seems strange for JOC to do that, but it's certainly possible to do it.

Edit: One other user used this in a Paracorr with good results. I have a hard time believing it has built-in coma correction. therefore.

Ok, then ES has achieved the impossible. I plan to observe at Lake Sonoma this winter, you are welcome to see for yourself.
Clears,

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pbsastro
sage

Reged: 03/21/07

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: Shneor]
#5515012 - 11/11/12 08:09 PM

Quote:

Yes, it's massive! And beautiful! Also saw a 3" diagonal.

Clears,

I have been dreaming over that eyepiece for two years now, since I saw a picture of it from the manufacturer lab. The day is getting closer!

The 3" diag another dream, finally will be able to use my XW40 as it should, fully illuminated to the edge.

The weight is not necessarly a bad thing. Tipically apos from 5" up, specially from 6" up, are front heavy. My 175 apo is held near the lens although it has a 3.5" FT focuser.

No picture of the 3" diag?

Edited by pbsastro (11/11/12 08:20 PM)

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pbsastro
sage

Reged: 03/21/07

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5515028 - 11/11/12 08:22 PM

The importance of these eyepieces (9-120, 25-100, 30-100) to ES is not profit. It is the same as F1 for car manufacturers. It is a statement of tecnological superiority. ES is leaving TV behind. And in the way it is creating standards, like the 3" size.

Meanwhile TV is inovating with the Delos, which is a huge leap from the XWs...

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MrGrytt
scholastic sledgehammer

Reged: 07/28/05

Loc: Upstate New York

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5515063 - 11/11/12 08:49 PM

Quote:

The importance of these eyepieces (9-120, 25-100, 30-100) to ES is not profit. It is the same as F1 for car manufacturers. It is a statement of tecnological superiority. ES is leaving TV behind. And in the way it is creating standards, like the 3" size.

Meanwhile TV is inovating with the Delos, which is a huge leap from the XWs...

Yes, their technological superiority over Tele Vue is evident.

Harvey

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pbsastro
sage

Reged: 03/21/07

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: MrGrytt]
#5515133 - 11/11/12 09:41 PM

Quote:

Yes, their technological superiority over Tele Vue is evident.

According to TV yes, they said they could not make those.
I will not go into watertight, that ES shares with Nikon and Pentax, because TV may allow us to get extra nebulas inside the eyepiece, for free.
TV has been superior, that is a fact, but the tide is turning. The past is full of ex-superiors that chose to rest on their superiority.

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Achernar
Postmaster

Reged: 02/25/06

Loc: Mobile, Alabama, USA

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: Scanning4Comets]
#5515621 - 11/12/12 08:47 AM

That thing looks more like a depth charge than an eyepiece......

Taras

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rtomw77
Pooh-Bah

Reged: 10/06/04

Loc: Deer Valley, AZ

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: Achernar]
#5515655 - 11/12/12 09:26 AM

We saw that monster at ASAE.

Tom

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pbsastro
sage

Reged: 03/21/07

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5516592 - 11/12/12 07:39 PM

Quote:

Quote:

Yes, their technological superiority over Tele Vue is evident.

According to TV yes, they said they could not make those.
I will not go into watertight, that ES shares with Nikon and Pentax, because TV may allow us to get extra nebulas inside the eyepiece, for free.
TV has been superior, that is a fact, but the tide is turning. The past is full of ex-superiors that chose to rest on their superiority.

To avoid misinterpretation: A 25-100 from TV may be better than a 25-100 from ES, and a 30-100 from TV may be better than a 30-100 from ES.
But I am 100% sure that the 9-120, 25-100 and 30-100 from ES are much better than the non-existent counterparts from TV.

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csa/montana
Den Mama

Reged: 05/14/05

Loc: montana

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5516972 - 11/12/12 10:44 PM

Here it is, along side the ES30

http://www.cloudynights.com/ubbthreads/showthreaded.php/Number/5516901/

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M44
sage

Reged: 03/24/07

Loc: SoCal.

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: csa/montana]
#5517186 - 11/13/12 01:42 AM

It looks like Jeff Bridges's prototype iron man suit next to Robert Downey's suit.

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ThreeD
scholastic sledgehammer

Reged: 12/23/08

Loc: Sacramento suburbs

Re: A 30mm 100 degree 3 inch barrel in the works! new

[Re: pbsastro]
#5517591 - 11/13/12 10:03 AM

Quote:

To avoid misinterpretation: A 25-100 from TV may be better than a 25-100 from ES, and a 30-100 from TV may be better than a 30-100 from ES.
But I am 100% sure that the 9-120, 25-100 and 30-100 from ES are much better than the non-existent counterparts from TV.

Where can I buy one of these 25-100s? Oh, that's right, it doesn't exist as a product for sale from ES either... (I'm not interested in the others but don't think I could get my hands on them right now either.)

When/if they do become available, I hope they are great and sell well but did it ever dawn on you that TV stopped where they did because they wouldn't want to put their name on EPs that would compromise aspects which they felt didn't meet their standards? Again, if ES puls them off and they are great EPs that's awesome but to assume that because EP designs are produced that they will be great EPs is a bit of stretch. If it turns out that they are less than great would that be a signal that TV is technologically superior because they know the real limitations?

Note, I'm not taking sides here or suggesting anything other than one should wait and see rather than get tied up in the hype.

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