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BillJames
newbie
Reged: 07/21/08
Posts: 2
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Hi,
I found this link while surfing around. I thought you guys might like it. It's updated every hour.
10 Most Watched Binocular Auctions on Ebay.
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Rich N
Post Laureate
Reged: 09/22/04
Posts: 5300
Loc: San Francisco Bay Area, Calif...
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What's Ebay?
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Joe Ogiba
Post Laureate
Reged: 02/14/02
Posts: 3326
Loc: NJ USA
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It's too bad the Zeiss 8x40 Deltar ultra-wide angle binoculars were not the Zeiss Jena Deltarem 8x40 with 90° AFOV.
BTW welcome to CN BillJames (Member # 49719 ) , 49,702 new members since I joined ! 
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Pentax PF-80ED
Meade 102ED APO
Orion EON 72
120ST
Apex 127
C6 XLT
CR150
C9.25
XT10
Zeiss 7x42 FL
Canon 10x42L IS WP
15x50 IS
12x36 IS II
Garrett Optical 28x110 HD-WP Signature Series
Oberwerk BT-80 45
Apogee RA-88-SA
Denk II Power x Switch binoviewer w/13mm Ethos, 20mm Pentax XW's, 20mm Widescan III's.
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Gordon Rayner
professor emeritus
Reged: 03/24/07
Posts: 505
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The Deltar is the individual focus version. The Deltarem is the central focus version. Both date from the 1930's. I have had a Deltar for over 20 years. They have the very wide field, but image quality drops off rapidly in the outer portions of the field. The eyepiece looks like a standard orthoscopic, but the inner surface of the eyelens is aspherized. I believe that Koenig was the designer. The Zeiss aspherizing machine is discussed in detail in Twyman, long our of print, but present in big, older technical libraries. There are more modern machines to aspherize.
I prefer some of the WW II designs and postwar types, particularly for night use.
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MacRoberts
sage
Reged: 08/25/05
Posts: 325
Loc: Redlands, CA
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Welcome to CN, Bill! Thanx for the link, too.
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Jim
"And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: He made the stars also." Genesis 1:16
NP-127, TV-85
Naglers, Pentax XWs
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etc
member
Reged: 01/27/08
Posts: 40
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Interesting.
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BillJames
newbie
Reged: 07/21/08
Posts: 2
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how many Deltar did they make?
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Rich N
Post Laureate
Reged: 09/22/04
Posts: 5300
Loc: San Francisco Bay Area, Calif...
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Ebay? What's Ebay? 
I've never bought or sold anything on EBay. I've not spent more than maybe 5 mon on EBay. But, I've noghting against EBay.
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AstroRealtor
professor emeritus
Reged: 03/26/08
Posts: 538
Loc: Terra Firma
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Quote:
What's Ebay?
Isn't that one of (the former dictator of Iraq) Saddam Hussein's sons? 
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Clear Skies, Jim
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Discovering: Messier objects, Deep sky treasures, NGCs, Double stars, & Nebulae of all kinds.
Televue 85 "Polaris" Mount
Custom Crafted Newtonian Dob 8" f7 w/Feathertouch
Celestron Cometron Reflector 114mm f8
Zeiss Diafun 8 X 30 Binos
Zeiss 10 X 56 Binos
 Aldrich Astronomical Society
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