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Equipment Discussions >> Eyepieces

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RogerC
member


Reged: 04/06/09

Origins of Ploessl Eyepiece
      #5626474 - 01/16/13 04:05 PM

Hi, All.

In case anyone is interested, I've just published an article about the origins of the Ploessl eyepiece, and how this 20th c. invention became connected to the 19th c. Viennese optician GS Ploessl. The connection has been rather shrouded in mystery in the past.

The article is available in the Journal of the Antique Telescope Society. http://webari.com/oldscope/

Cheers,
Roger Ceragioli


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RogerC
member


Reged: 04/06/09

Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626485 - 01/16/13 04:09 PM

I've been instructed that the correct URL is: http://oldscope.org/

Cheers,
Roger


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Mark9473
Postmaster
*****

Reged: 07/21/05

Loc: 51°N 4°E
Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626491 - 01/16/13 04:11 PM

So where on that site is your article?

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RogerC
member


Reged: 04/06/09

Re: Origins of Ploessl Eyepiece new [Re: Mark9473]
      #5626507 - 01/16/13 04:18 PM

Hi, Mark.

The paper isn't posted online. It is an old-fashioned research article, scholarly in content, about 25 pages. You have to contact the ATS to order a copy for a small fee. I'm not allowed to distribute it for free. It is copyrighted to the ATS.

Cheers,
Roger

Edited by RogerC (01/16/13 04:19 PM)


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Mark9473
Postmaster
*****

Reged: 07/21/05

Loc: 51°N 4°E
Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626513 - 01/16/13 04:21 PM

Hahaha, well that fits that type of Society. I'll revert to Wikipedia, thanks.

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RogerC
member


Reged: 04/06/09

Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626554 - 01/16/13 04:39 PM

The bibliographic citation is:

Ceragioli, R., "Georg Simon Ploessl and his Namesake Eyepiece," Journal of the Antique Telescope Society, 36 (Fall, 2012), 2-24.

On the www.oldscope.org URL, click on "contact us." You can email Walt Breyer of the society, to obtain a copy, if interested.

Roger Ceragioli


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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626764 - 01/16/13 06:37 PM

Hi Roger! Thanks for the information. Have contacted them and look forward to the read.

Appreciated,
-Bill


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MRNUTTY
Carpal Tunnel
*****

Reged: 11/22/11

Loc: Mendon, MA
Re: Origins of Ploessl Eyepiece new [Re: BillP]
      #5626898 - 01/16/13 08:00 PM

How did it go from Ploessl to Plossl? Or did it?

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Jim Nelson
scholastic sledgehammer


Reged: 05/10/05

Loc: SE Michigan
Re: Origins of Ploessl Eyepiece new [Re: MRNUTTY]
      #5626919 - 01/16/13 08:10 PM

"Ploessl" is an alternate way of spelling "P-l-o with an umlaut-s-s-l."

Technically there is no "Plossl" eyepiece (o without an umlaut), but since umlauts are difficult to type w/standard keyboards and fonts, "Plossl" is used casually.

See the umlaut!:

http://www.televue.com/engine/TV3b_page.asp?id=51


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RogerC
member


Reged: 04/06/09

Re: Origins of Ploessl Eyepiece new [Re: BillP]
      #5626932 - 01/16/13 08:15 PM

Hi, Bill.

Sure. Hope you like it.

Any idea when your book will appear? I'm looking forward to it!

Cheers,
Roger


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

Reged: 06/24/03

Loc: Los Angeles
Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5626951 - 01/16/13 08:26 PM

Roger,
This would appear to contradict many previous descriptions of the development of the "Plössl" eyepiece (there are 3 variations of it he designed himself), as in:
http://www.astrosurf.com/re/evolution_of_eyepieces.pdf
and other works.
Did you look at his original work and patents?
How does that make modern versions something other than copies of that design?


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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: Origins of Ploessl Eyepiece new [Re: RogerC]
      #5627109 - 01/16/13 10:03 PM

I hope early March. In review now.

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Jaimo!
Pooh-Bah
*****

Reged: 10/11/07

Loc: Exit 135 / 40° North
Re: Origins of Ploessl Eyepiece new [Re: Jim Nelson]
      #5627223 - 01/16/13 11:22 PM

Quote:

"Ploessl" is an alternate way of spelling "P-l-o with an umlaut-s-s-l."

Technically there is no "Plossl" eyepiece (o without an umlaut), but since umlauts are difficult to type w/standard keyboards and fonts, "Plossl" is used casually.

See the umlaut!:

http://www.televue.com/engine/TV3b_page.asp?id=51




On a windows machine, using just about any font:

umlaut ö = alt+0246

degrees° = alt+0176


Jaimo!


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Jim Curry
Pooh-Bah
*****

Reged: 10/29/07

Loc: STL
Re: Origins of Ploessl Eyepiece new [Re: Jaimo!]
      #5627495 - 01/17/13 06:37 AM

great article, Roger. Thanks. (I read it in my ATS newsletter)

Jim


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Sarkikos
Postmaster
*****

Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Origins of Ploessl Eyepiece new [Re: Jim Curry]
      #5627959 - 01/17/13 12:03 PM

Plössl - pronounced something like "plersl." "Nagler Plössl" would be pronounced "nehgler plersl." Or it should be.


Mike


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DaveJ
Carpal Tunnel
*****

Reged: 01/07/05

Loc: NE Ohio
Re: Origins of Ploessl Eyepiece new [Re: Sarkikos]
      #5628139 - 01/17/13 01:54 PM

Quote:

Plössl - pronounced something like "plersl." "Nagler Plössl" would be pronounced "nehgler plersl." Or it should be.




Perhaps so, but the man himself (Uncle Al) says "Naygler Plahsl"


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Sarkikos
Postmaster
*****

Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Origins of Ploessl Eyepiece new [Re: DaveJ]
      #5628156 - 01/17/13 02:04 PM

I read in one blog that himself pronounces Nagler somewhere between an "ah" as in "Bach" and an "a" as in "bat." That would be about right. But "Plahsl" is just plain wrong.


Mike


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SteveTheSwede
member


Reged: 09/28/09

Loc: Stockholm, Sweden
Re: Origins of Ploessl Eyepiece new [Re: Sarkikos]
      #5628158 - 01/17/13 02:06 PM

Quote:

Plössl - pronounced something like "plersl." "Nagler Plössl" would be pronounced "nehgler plersl." Or it should be.


Mike




Well, bit more like this:
The PL is hard and short like the "pl" in Pluto.
The Ö-sound isn't exactly a part of the English language (which is why the letter isn't used, one suspects) but the closest sounds I can think of would be the "u" in "lurk" or "i" in "dirk" ( a bit depending on accent but you get the idea).
And finally SSL like the "sl" in "slacker".

It's two syllables: plö-ssl

Steve


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Sarkikos
Postmaster
*****

Reged: 12/18/07

Loc: Suburban Maryland, USA
Re: Origins of Ploessl Eyepiece new [Re: SteveTheSwede]
      #5628161 - 01/17/13 02:08 PM

Steve,

Yep, you've got it.

Mike


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BillP
Postmaster
*****

Reged: 11/26/06

Loc: Vienna, VA
Re: Origins of Ploessl Eyepiece new [Re: Sarkikos]
      #5628175 - 01/17/13 02:16 PM

Quote:

Plössl - pronounced something like "plersl." "Nagler Plössl" would be pronounced "nehgler plersl." Or it should be.


Mike




I think I will continue to pronounce it the way that is least effort - plah sul


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