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Equipment Discussions >> Eyepieces

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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: stevenp_86]
      #5058514 - 02/06/12 01:34 PM Attachment (98 downloads)

Here's an image of the Explore Scientific 100 degree 25mm. List is $899.99. Retail is $599.99. Expected availability is April.

Current 82 degree and 100 degree eyepiece sale ends March 4. New prices go into effect March 5.

The 9mm 120 degree should start arriving late February/early March.

Edited by frebie (02/06/12 01:41 PM)


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dyslexic nam
Carpal Tunnel
*****

Reged: 01/28/08

Loc: PEI, Canada
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: frebie]
      #5058587 - 02/06/12 02:07 PM

Wow! Not a bad price.

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stevenp_86
professor emeritus
*****

Reged: 11/30/11

Loc: Ontario Canada
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: dyslexic nam]
      #5058635 - 02/06/12 02:35 PM

very good price, its affordable enough so many regular people like us can afford it without having to make sacrifices in other areas in life,

they had to do their own R&D, so considering that its a new model and it costs less then an ethos, id say good job ES


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stevenp_86
professor emeritus
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Reged: 11/30/11

Loc: Ontario Canada
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: stevenp_86]
      #5058639 - 02/06/12 02:38 PM

one of the things i dislike about purchasing anything is buyers remorse, "is it worth the price? is it marked up 400%? will it go on sale in a few months?"

i can safley say at that price, no one will have to worry about the "fear" of purchasing it


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94bamf
Carpal Tunnel
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Reged: 12/15/08

Loc: Kansas City,Mo
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: frebie]
      #5058642 - 02/06/12 02:40 PM

Quote:

Here's an image of the Explore Scientific 100 degree 25mm. List is $899.99. Retail is $599.99. Expected availability is April.

Current 82 degree and 100 degree eyepiece sale ends March 4. New prices go into effect March 5.

The 9mm 120 degree should start arriving late February/early March.




Assuming the picture is accurate, it seems obvious that the design of this eyepiece is completely different from the other 100 deg AFOV eyepieces. It appears much shorter. Actually, it appears smaller in every way compared to the 20mm ES100. Can't wait to hear the reports..

Ken


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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: 94bamf]
      #5058765 - 02/06/12 03:43 PM

The image posted is a proof-of-performance production unit, serial #01 according to the manufacturer. Subsequent production units should be identical.

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Jeff Black
member


Reged: 01/29/12

Loc: Colorado, USA
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: frebie]
      #5058775 - 02/06/12 03:48 PM

Just great... another $600 I have to spend.

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Jim Romanski
Carpal Tunnel
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Reged: 01/02/05

Loc: Guilford, Connecticut
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: 94bamf]
      #5058899 - 02/06/12 05:04 PM

Quote:

Assuming the picture is accurate, it seems obvious that the design of this eyepiece is completely different from the other 100 deg AFOV eyepieces. It appears much shorter. Actually, it appears smaller in every way compared to the 20mm ES100.




Actually, it looks quite a bit wider than the 20mm to me. It might be a bit shorter or it could be the angle of the photo. Frankly, I would hesitate to make any guesses about the design based on a photo.

At least now it appears that they have more than a prototype.


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94bamf
Carpal Tunnel
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Reged: 12/15/08

Loc: Kansas City,Mo
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: Jim Romanski]
      #5058983 - 02/06/12 05:56 PM

Quote:

Quote:

Assuming the picture is accurate, it seems obvious that the design of this eyepiece is completely different from the other 100 deg AFOV eyepieces. It appears much shorter. Actually, it appears smaller in every way compared to the 20mm ES100.




Actually, it looks quite a bit wider than the 20mm to me. It might be a bit shorter or it could be the angle of the photo. Frankly, I would hesitate to make any guesses about the design based on a photo.

At least now it appears that they have more than a prototype.





Jim, the specs Fred provided in an earlier thread for the ES 25mm 100 are 73mm wide(2.87") by 134mm tall(5.27"). I don't have the specs, nor can I find them on the web for the ES 20mm 100, but I will measure mine as soon as I get home. Best I can do is David Knisely's specs for the 14mm 100, which are 6.25" x 2.75". I think the 20mm ES 100 is a bit wider than the 14mm.. No way the 25mm is the same optical arrangement with it being so much shorter..

Ken


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Phillip Creed
Idiot Seeking Village
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Reged: 07/25/06

Loc: Canton, OH
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: Jim Romanski]
      #5058986 - 02/06/12 05:59 PM

Dear Stargazer,

I know you love those 100-deg eyepieces, and they're about as pricey as I am, but please don't forget about me, okay?

Sincerely,
Your Mortgage Payment



Okay, okay; in all seriousness, $599 is a very reasonable price if it lives up to the hype. Combined with a Paracorr, that can still max-out a scope's TFOV while maintaining a reasonable exit pupil in all but the very fastest (< f/3.5) dobs out there. Anyone who's got an f/4 Schmidt-Newtonian (no Paracorr required) is probably really excited about this eyepiece.

Clear Skies,
Phil


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frebieAdministrator
Chief assistant to the assistant chief


Reged: 04/29/08

Loc: Neither here nor there.
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: Phillip Creed]
      #5059003 - 02/06/12 06:08 PM

The ES 100 degree 20mm is approximately 6-1/8" tall with the eyecup rolled down and 2.7" wide, give or take a furlong or two.

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94bamf
Carpal Tunnel
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Reged: 12/15/08

Loc: Kansas City,Mo
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: frebie]
      #5059010 - 02/06/12 06:16 PM

Quote:

The ES 100 degree 20mm is approximately 6-1/8" tall with the eyecup rolled down and 2.7" wide, give or take a furlong or two.




Thanks Fred, amazing how hard it is to find height and width specs for eyepieces online! Televue doesn't even list them for their eyepieces.

Ken


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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: 94bamf]
      #5059344 - 02/06/12 10:08 PM

Quote:

Quote:

Here's an image of the Explore Scientific 100 degree 25mm. List is $899.99. Retail is $599.99. Expected availability is April.

Current 82 degree and 100 degree eyepiece sale ends March 4. New prices go into effect March 5.

The 9mm 120 degree should start arriving late February/early March.




Assuming the picture is accurate, it seems obvious that the design of this eyepiece is completely different from the other 100 deg AFOV eyepieces. It appears much shorter. Actually, it appears smaller in every way compared to the 20mm ES100. Can't wait to hear the reports..

Ken




Smaller or fatter perspective angle change? I wait to compare weight, length, width; which I assume would be larger for the 25mm. But you may be right in which case it would be a win-win for the design.


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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: frebie]
      #5059360 - 02/06/12 10:21 PM

Has anyone seen a photo of the 5.5mm ES? OK to reply back in 5.5mm thread if yes.

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John Rhodes
Vendor (Televue Rep)
*****

Reged: 02/21/06

Loc: Torrance, CA.
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: 94bamf]
      #5059377 - 02/06/12 10:28 PM

Quote:

Thanks Fred, amazing how hard it is to find height and width specs for eyepieces online! Televue doesn't even list them for their eyepieces.

Ken




Sure we do... http://www.televue.com/engine/TV3_page.asp?id=28


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faackanders2
Carpal Tunnel


Reged: 03/28/11

Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: John Rhodes]
      #5059405 - 02/06/12 10:46 PM

Actually, I believe Televue does the best job at listing eyepiece dimensions.

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94bamf
Carpal Tunnel
*****

Reged: 12/15/08

Loc: Kansas City,Mo
Re: 25mm ES 100* confirmed? sale date? preorder? new [Re: John Rhodes]
      #5059507 - 02/06/12 11:43 PM

Quote:

Quote:

Thanks Fred, amazing how hard it is to find height and width specs for eyepieces online! Televue doesn't even list them for their eyepieces.

Ken




Sure we do... http://www.televue.com/engine/TV3_page.asp?id=28




My apologies, somehow I missed the chart. I couldn't find the specs under the individual eyepieces, and was quite suprised they weren't listed. I guess I just needed to look harder. Thanks for the link.

Ken


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Jim Romanski
Carpal Tunnel
*****

Reged: 01/02/05

Loc: Guilford, Connecticut
Re: 25mm ES 100* confirmed? sale date? preorder? [Re: 94bamf]
      #5060108 - 02/07/12 11:08 AM

So if these specs are correct then the 25mm is how it appears to be (i.e. shorter and wider than the 20mm).

I don't think anyone expects them to be identical in design. The ES and the Ethos aren't "scaled" designs since they maintain the same AFOV and similar eye relief. Most likely they are similar in design and glass types especially two eyepieces in the same line and close to the same focal length like the 6mm and 8mm Ethos.

But that's about as far as I'd speculate sight unseen.


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Mauro Da Lio
professor emeritus


Reged: 09/12/04

Re: 25mm ES 100* confirmed? sale date? preorder? [Re: tmbuser6]
      #5060810 - 02/07/12 05:57 PM

Quote:

I have yet to have any of them fog up for not being purged or sealed with o-rings.




Mine fogs. I observe where dew often forms on EVERY surface, including the outer surface of the eyepieces... and guess what happened. Dew got in via capillarity and once inside it is very difficult to get it out, and your eyepiece is transparent at home but not on the observing site, unless you constantly keep it warm which I am now forced to do. After one year I still need constant dew-not strips on.


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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: 25mm ES 100* confirmed? sale date? preorder? [Re: Mauro Da Lio]
      #5061491 - 02/08/12 01:56 AM

Well, I find it interesting that there will soon be 100 degree eyepieces available in
25/21/20/17/16/14/13/12.5/10/9(2)/8/6/5.5/4.7/and 3.7mm focal lengths.
Must be all those people looking for planetary eyepieces.


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