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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

Post Extras:

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?

Post Extras:

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)

Post Extras:

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.

Post Extras:

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

Post Extras:

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!

Post Extras:

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
Pooh-Bah

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

Post Extras:

Sarkikos
Postmaster

Reged: 12/18/07

Loc: Suburban Maryland, USA

Re: Origins of Ploessl Eyepiece new