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APM M.Ludes
Vendor (APM Telescopes)
*****

Reged: 05/01/03

Loc: Germany
New Orthos from Germany
      #5003755 - 01/06/12 06:04 AM

Hello Everybody

this Morning I have had a phone talk with the TMB Mono Manufactur in Berlin/Germany.

Everything we want is now clear understood and they will make a first offer for 10 mm, 25 mm and 34 mm.

The goal is to get the same level of quality as the latest Zeiss ABBE Ortho's II.

They will send me now a offer. if we accept the offer, the designing work takes roughly 8 week for optics, coating, mechanics etc.

We will use my bandnew never used Zeiss ABBE II as reference, they will measure the coating transmission and other things, so we are shure we make a equal quality eyepiece.

Then a prototype will be made and we get it for testing. If we say yes to the prototpye we start first production run.

If you all like that design , we will expand the line

Pricepoint : They asked me abgout price. I told them if it cost the same money as the ABBE sold , we are ok, that should be at current exchange rate ( 1 Euro = $ 1.30) around $ 350 or a bit less.

now lets wait a bit and see what comes out

Edited by APM M.Ludes (01/06/12 06:11 AM)


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hfjacinto
I think he's got it!
*****

Reged: 01/12/09

Loc: Land of clouds and LP
Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5003962 - 01/06/12 09:54 AM



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Mak2007
professor emeritus


Reged: 06/24/07

Re: New Orthos from Germany new [Re: hfjacinto]
      #5004460 - 01/06/12 03:50 PM

Awesome news!!! Please let us know when they are ready, I am very interested especially in the long focal ones.

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ZielkeNightsky
Carpal Tunnel
*****

Reged: 10/01/06

Loc: Denmark
Re: New Orthos from Germany new [Re: Mak2007]
      #5004461 - 01/06/12 03:52 PM

Great news

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BWAZ
Pooh-Bah
*****

Reged: 11/21/05

Loc: CA
Re: New Orthos from Germany new [Re: ZielkeNightsky]
      #5004729 - 01/06/12 06:50 PM

I'm in if it works out as planned.

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Gord
Carpal Tunnel
*****

Reged: 01/06/04

Loc: Toronto, ON, Canada
Re: New Orthos from Germany new [Re: BWAZ]
      #5004967 - 01/06/12 10:04 PM

Very exciting! I like the sound of the details so far.

Clear skies,


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Sirius76
Vendor-Dark Skies Apparel
*****

Reged: 05/11/07

Loc: Chicago, Il
Re: New Orthos from Germany new [Re: Gord]
      #5005036 - 01/06/12 10:45 PM

Keep us posted! I'm in for a set!!

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Moonglum
professor emeritus


Reged: 06/01/08

Re: New Orthos from Germany new [Re: Sirius76]
      #5005108 - 01/06/12 11:35 PM

What are the field stops of the 25 and 34's?

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Jim Rosenstock
Postmaster
*****

Reged: 07/14/05

Loc: MD, south of the DC Nebula
Re: New Orthos from Germany new [Re: Sirius76]
      #5005145 - 01/06/12 11:55 PM

Quote:

Keep us posted! I'm in for a set!!




+1

I'm in, Markus!


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Mark9473
Postmaster
*****

Reged: 07/21/05

Loc: 51°N 4°E
Re: New Orthos from Germany new [Re: Jim Rosenstock]
      #5005909 - 01/07/12 05:01 PM

Any chance for a 15 mm? For me 10 is too close to the BGO 9.

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Aleko
super member
*****

Reged: 08/01/10

Loc: Georgia
Re: New Orthos from Germany new [Re: Mark9473]
      #5006250 - 01/07/12 08:38 PM

I would definitely be interested in the 10mm (or less).

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APM M.Ludes
Vendor (APM Telescopes)
*****

Reged: 05/01/03

Loc: Germany
Re: New Orthos from Germany new [Re: Aleko]
      #5006942 - 01/08/12 09:48 AM

we also running a discussion in Germany about the new eyepieces and they brough up the Idea of a König II modell, which offers a wider field of around 55° and a higher eyerelief then the ortho.
In conjunction we also discussing a real comacorrected barlowlens on top of the excisting TMB barlow for all those owning a newtonian telescope.

The Konig is also a 4 element eyepiece and a cool idea, as i think.


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suburbanskies
sage
*****

Reged: 12/18/04

Loc: New Jersey, USA
Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5007025 - 01/08/12 10:36 AM

Yes cool idea, Markus.

How are the optical aberrations of the Konig II and the ortho different? Do we really get bigger field and more eyerelief for free?

Thanks,
Mark


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Sirius76
Vendor-Dark Skies Apparel
*****

Reged: 05/11/07

Loc: Chicago, Il
Re: New Orthos from Germany new [Re: suburbanskies]
      #5007121 - 01/08/12 11:31 AM

Markus,

Keep my name in the hat for the Orthos


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Mak2007
professor emeritus


Reged: 06/24/07

Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5007166 - 01/08/12 11:51 AM

Quote:

we also running a discussion in Germany about the new eyepieces and they brough up the Idea of a König II modell, which offers a wider field of around 55° and a higher eyerelief then the ortho.
In conjunction we also discussing a real comacorrected barlowlens on top of the excisting TMB barlow for all those owning a newtonian telescope.

The Konig is also a 4 element eyepiece and a cool idea, as i think.




I personally think that this is a great, great idea. Here in USA the company University Optics offered years ago a line of Konigs II made in Japan, which were pretty good in long achromats (not popular today) as well as Schmidt-Cassegrain and Maksutov-Cassegrain telescopes. I had some, and I really liked them. I believe that what killed the Konigs from the market was the popularization of fast telescopes with short F ratio like Dobsons, Apos and even Achro refractors; here people started to complain about the performance of the Konigs. Also, the appearance in the market of other wide field eyepieces, some of them cheaper than the U.O. Konigs, made UO (or the manufacturer in Japan) to discontinue them.
If you could design a Konig keeping an on-axis performance of the Abbe ortho, and with a lateral correction usable in up to F/5 scopes, then you should have a winner eyepiece.
Importantly, whatever eyepiece design you use, your new eyepiece must have an on-axis performance identical to a Supermonocentric or a Zeiss Abbe... this is crucial to me and probably to other users as well.
Good luck with this adventure. Count me in (PS. I have bought some of my supermonos from you in the past and I am truly interested in this new German eyepieces. All the best)


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APM M.Ludes
Vendor (APM Telescopes)
*****

Reged: 05/01/03

Loc: Germany
Re: New Orthos from Germany new [Re: Mak2007]
      #5007502 - 01/08/12 02:35 PM

we will compare the spots before w emake a final decision, but on axis , same good made, they should have identical performance.
The König II is stated to be superior to the Zeiss Abbe, read this article
http://www.brayebrookobservatory.org/BrayObsWebSite/BOOKS/EVOLUTIONofEYEPIECES.pdf

and here the overview
http://www.brayebrookobservatory.org/BrayObsWebSite/HOMEPAGE/PageMill_Resources/PUBLICATIONS/treediag.jpg

there is another idea coming up, mentioned by Uwe Laux of Zeiss

YAG cristall = Yttrium-Aluminum-Granat of the eye lens with superior performance , saves 1 lens in the field group. But this is super hard and maybe much to expensive element


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Jim Rosenstock
Postmaster
*****

Reged: 07/14/05

Loc: MD, south of the DC Nebula
Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5007537 - 01/08/12 03:01 PM

Markus,

I love my old University Optics Konig eyepieces, and would also love to see a high-end German Konig reissue.

There is confusion, BTW, about what constitutes "Konig" and "Konig-II" etc....as you know, Albert Konig created many eyepiece designs, which have also been modified by others.

In any case, I'd support an uber-Konig reissue as well. But I think that a German made uber-Abbe would generate more interest.

As for YAG eyelenses, can you explain the benefits (and possibly quantify the added cost)?

Cheers,

Jim


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Mark9473
Postmaster
*****

Reged: 07/21/05

Loc: 51°N 4°E
Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5008513 - 01/09/12 08:34 AM

Quote:

The König II is stated to be superior to the Zeiss Abbe, read this article
http://www.brayebrookobservatory.org/BrayObsWebSite/BOOKS/EVOLUTIONofEYEPIECES.pdf




If you're reading that text, Markus, weren't you intrigued by the description of eyepieces that "have very flat 60° fields at f/4 completely free from rectilinear distortion,
lateral colour, and minimal astigmatism. These eyepieces are highly corrected with extended eye clearance of 1.2Fe."?


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sungrazer
member


Reged: 09/14/07

Loc: Germany
Re: New Orthos from Germany new [Re: APM M.Ludes]
      #5008636 - 01/09/12 10:24 AM

I admit, that I'm not an expert in optics of any kind. But, when I look at the König II design, there are more air to glas surfaces compared to the Abbe Ortho design, isn't it?. I would still vote for the Abbe design...

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ThomasM
sage


Reged: 04/19/09

Re: New Orthos from Germany new [Re: sungrazer]
      #5009217 - 01/09/12 04:03 PM

Actually,

the design of the aspheric Abbe ortho (25 mm focal length) with three lenses and 55 degree AFOV is very interesting. It seems that the some of the Zeiss microscope eyepieces follow this direction, e.g.the 10 mm focal length with comfortable 11 mm eyerelief and 55 degress AFOV.
Several years ago Astro Physics has manufactured eyepieces, the Super Planetary with only three lenses and long eye relief (100-140 % of the focal length).

I think this would be very interesting option for a new line of eyepiece. I would be most interested in 6 and 8 mm, but the longer focal length would off course also be interesting.

Thomas


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