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Equipment Discussions >> Eyepieces

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Jon Isaacs
Postmaster
*****

Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: Parks Gold Question... new [Re: TheObserver]
      #6321067 - 01/18/14 06:39 PM

Quote:

Quote:



I have the 10mm and the 15mm Parks Gold.. I personally don't jump when any of these 5 element eyepieces become available but these should be as good as any..

Jon




Jon how would you rate them are they worth the price? i mean i see the resell value isn't all that great.




I consider them the equal of The Celestron Ultima's which is to say top tier ~52 degree eyepieces.. I buy to use, not to sell. If the price is right, I buy.


The April 1996 S&T had a nice test of a wide range of Plossls and the like. Eyepieces were tested on the optical bench and evaluated in the field. The two top performers were the TVs and the Ultimas.

Jon


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Starman1
Vendor (EyepiecesEtc.com)
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Reged: 06/24/03

Loc: Los Angeles
Re: Parks Gold Question... [Re: Jon Isaacs]
      #6321078 - 01/18/14 06:46 PM

Parks Gold Series Plossl = Baader Eudiascopic = Omcon Ultuma = Tuthill Plossl = Antares Elite Plossl = Celestron Ultima Plossl = ?
We think the design is after the Zeiss Astroplanokular design, c.1945.
These were all made in Japan by the same firm and private-labeled to the US and other countries.
The Meade Series 4000 Super Plossl (pre-1994, 5 element), and Takahashi LE are the same design, but made by other factories.
Kasai Trading (Japan) is also selling an "Astroplan" eyepiece, which I believe is the same design.
2:1:2 design with focal plane outside the last element.
The 35mm had/has a focal plane larger than the inside diameter of the eyepiece lower barrel. This was accomplished by placing the focal plane above the barrel. As a result, this focal length requires a lot of in-focusing.


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