View previous topic :: View next topic |
Author |
Message |
SVP
Joined: 15 Jan 2009 Posts: 665 Location: Greece
Expire: 2017-12-17
|
Posted: Thu Oct 30, 2014 7:55 am Post subject: Astro-Berlin Telastan 2000/10 |
|
|
SVP wrote:
For all colleagues out there who like stovepipe-style long-focus lenses, I finally managed to get hold of a 58-yr old pic showing a copy of the famous-but-impossible-to-locate Astro Berlin Telastan 2000mm f/10 lens, enjoy:
|
|
Back to top |
|
|
ZoneV
Joined: 09 Nov 2009 Posts: 1633 Location: Germany
Expire: 2011-12-02
|
Posted: Thu Oct 30, 2014 8:04 am Post subject: |
|
|
ZoneV wrote:
Thanks for the picture!
Nice hood _________________ Camera modification, repair and DIY - some links to look through: http://www.4photos.de/camera-diy/index-en.html
I AM A LENS NERD!
Epis, Elmaron, Emerald, Ernostar, Helioplan and Heidosmat.
Epiotar, Kameraobjektiv, Anastigmat, Epis, Meganast, Magnagon, Quinar, Culmigon, Novotrinast, Novflexar, Colorplan, Sekor, Kinon, Talon, Telemegor, Xenon, Xenar, Ultra, Ultra Star. Tessar, Janar, Visionar, Kiptar, Kipronar and Rotelar.
|
|
Back to top |
|
|
Gamera
Joined: 16 Feb 2014 Posts: 86 Location: Scandinavia
|
Posted: Thu Oct 30, 2014 9:00 am Post subject: |
|
|
Gamera wrote:
Don't do that at home. He's pointing it more or less straight to the Sun... |
|
Back to top |
|
|
vlousada
Joined: 11 Dec 2010 Posts: 345 Location: Portugal
|
Posted: Thu Oct 30, 2014 11:04 am Post subject: |
|
|
vlousada wrote:
f/10 2000mm... OMG!
Thanks for sharing.
Gamera wrote: |
Don't do that at home. He's pointing it more or less straight to the Sun... |
For the angle of shading and lens, NOT really! (He is pointing to top and right of the sun)
More intriguing is where/how is he sitting _________________ Regards,
VITOR
-------
SELLING:
Please ask
|
|
Back to top |
|
|
exaklaus
Joined: 11 Aug 2009 Posts: 1633 Location: Niederrhein, Germany
Expire: 2011-12-02
|
Posted: Thu Oct 30, 2014 4:19 pm Post subject: |
|
|
exaklaus wrote:
That's a nice picture of that rare lens!
Thanks for sharing
I wonder, if you have the rights for it and could probably allow me to add it to my Astro-site?
Klaus
http://www.exaklaus.de/astro.htm _________________ my Ebay auctions
Canon 5D II,
Fuji GW690III, Fuji G617, Fujifilm X-E1
Bessaflex TM
Tachihara 4"x5"
Summilux-R 1:1,4/50
Canon FD 85mm 1:1,2
Color-Heliar 75mm F2.5 SL
www.autoselbstfotografie.de
www.classic-cameras-and-lenses.de |
|
Back to top |
|
|
SVP
Joined: 15 Jan 2009 Posts: 665 Location: Greece
Expire: 2017-12-17
|
Posted: Fri Oct 31, 2014 7:20 am Post subject: |
|
|
SVP wrote:
exaklaus wrote: |
That's a nice picture of that rare lens!
Thanks for sharing
I wonder, if you have the rights for it and could probably allow me to add it to my Astro-site?
Klaus
http://www.exaklaus.de/astro.htm |
I'm glad you asked; please, by all means do add this to your excellent site, no worries about the rights since I'm the current owner of the pic. I'm sending you the relevant files by e-mail. |
|
Back to top |
|
|
exaklaus
Joined: 11 Aug 2009 Posts: 1633 Location: Niederrhein, Germany
Expire: 2011-12-02
|
Posted: Fri Oct 31, 2014 9:45 am Post subject: |
|
|
exaklaus wrote:
SVP wrote: |
exaklaus wrote: |
That's a nice picture of that rare lens!
Thanks for sharing
I wonder, if you have the rights for it and could probably allow me to add it to my Astro-site?
Klaus
http://www.exaklaus.de/astro.htm |
I'm glad you asked; please, by all means do add this to your excellent site, no worries about the rights since I'm the current owner of the pic. I'm sending you the relevant files by e-mail. |
That's absolutly great
Klaus _________________ my Ebay auctions
Canon 5D II,
Fuji GW690III, Fuji G617, Fujifilm X-E1
Bessaflex TM
Tachihara 4"x5"
Summilux-R 1:1,4/50
Canon FD 85mm 1:1,2
Color-Heliar 75mm F2.5 SL
www.autoselbstfotografie.de
www.classic-cameras-and-lenses.de |
|
Back to top |
|
|
exaklaus
Joined: 11 Aug 2009 Posts: 1633 Location: Niederrhein, Germany
Expire: 2011-12-02
|
Posted: Fri Oct 31, 2014 9:56 am Post subject: |
|
|
exaklaus wrote:
Done! _________________ my Ebay auctions
Canon 5D II,
Fuji GW690III, Fuji G617, Fujifilm X-E1
Bessaflex TM
Tachihara 4"x5"
Summilux-R 1:1,4/50
Canon FD 85mm 1:1,2
Color-Heliar 75mm F2.5 SL
www.autoselbstfotografie.de
www.classic-cameras-and-lenses.de |
|
Back to top |
|
|
dickb
Joined: 04 Apr 2008 Posts: 821
|
Posted: Fri Oct 31, 2014 12:20 pm Post subject: |
|
|
dickb wrote:
Impressive! And I used to think my 640mm f4,5 version was big.. Maybe if I build a lens tube for my 800mm f/5 astro glass I´ll get something approaching this again. |
|
Back to top |
|
|
Himself
Joined: 01 Mar 2007 Posts: 3209 Location: Montreal
Expire: 2013-05-30
|
Posted: Sat Nov 01, 2014 12:33 am Post subject: |
|
|
Himself wrote:
Damn, SVP, I thought you had them all.
Or it's the only one missing from your collection? _________________ Moderator Himself |
|
Back to top |
|
|
SVP
Joined: 15 Jan 2009 Posts: 665 Location: Greece
Expire: 2017-12-17
|
Posted: Sat Nov 01, 2014 7:57 pm Post subject: |
|
|
SVP wrote:
Himself wrote: |
Damn, SVP, I thought you had them all.
Or it's the only one missing from your collection? |
Yeap, still missing this one; after many-many years of searching I only managed to get hold of the pic... |
|
Back to top |
|
|
Gerald
Joined: 25 Mar 2014 Posts: 1196 Location: Brazil
|
Posted: Sat Nov 01, 2014 10:25 pm Post subject: |
|
|
Gerald wrote:
This lens is very impressive, at least in the picture. However, if the intended application was still or cine photography, this lens does not make much sense, technically speaking.
Telephoto lenses made with conventional optical glasses suffer from longitudinal chromatic aberration. The secondary spectrum (difference in focal length for green and blue-red) is approximately 0.1% of the focal length. The secondary spectrum of a 400mm lens is approximately 0.4mm, which means that the lens has to be stopped-down to F11 to achieve a truly sharp image. By this logic, the Astro-Berlin Telastan 2000/10 had a secondary spectrum of about 2mm, so wide-open performance should be extremely poor, and the Astro-Berlin Telastan had to be stopped-down to F45 to circumvent the longitudinal chromatic aberration. Sadly an aperture F45 would make the resolution to be very low due to diffraction. In summary, the Berlin Telestan 2000/10 was an impractical project for its time.
Today, a high-performance telephoto lens with focal length of 2000mm and aperture F10 can be built because very low dispersion optical glasses are readily available. However, at the time the Astro-Berlin Telastan 2000/10 was made, these glasses were not available.
Probably only a few (one?) prototypes were made for marketing purposes. I suspect the performance of the real lens was so poor that the prototype(s) was(were) destroyed soon after. Maybe that explains why the Astro-Berlin Telastan 2000/10 is so hard (impossible?) to be found today. _________________ If raindrops were perfect lenses, the rainbow did not exist. |
|
Back to top |
|
|
Himself
Joined: 01 Mar 2007 Posts: 3209 Location: Montreal
Expire: 2013-05-30
|
Posted: Sat Nov 01, 2014 11:02 pm Post subject: |
|
|
Himself wrote:
It doesn't matter Gerald. All those technicalities are not important.
It's about having the thing. Getting the last piece of the puzzle. _________________ Moderator Himself |
|
Back to top |
|
|
BurstMox
Joined: 04 Dec 2011 Posts: 1998 Location: France
Expire: 2016-08-02
|
Posted: Sat Nov 01, 2014 11:59 pm Post subject: |
|
|
BurstMox wrote:
That's big! Thanks for sharing the photo! _________________ Pierre
sovietlenses.fr
Soviet lenses Facebook group |
|
Back to top |
|
|
Tervueren
Joined: 18 May 2011 Posts: 1177 Location: West Sussex, United Kingdom
Expire: 2014-11-08
|
Posted: Sun Nov 02, 2014 12:34 am Post subject: |
|
|
Tervueren wrote:
Thanks for sharing, some lovely workmanship in that tripod
Found this on ebay, very strange setup Click here to see on Ebay
Last edited by Tervueren on Sun Nov 02, 2014 12:48 am; edited 1 time in total |
|
Back to top |
|
|
Gerald
Joined: 25 Mar 2014 Posts: 1196 Location: Brazil
|
Posted: Sun Nov 02, 2014 12:44 am Post subject: |
|
|
Gerald wrote:
Himself wrote: |
All those technicalities are not important.
It's about having the thing. Getting the last piece of the puzzle. |
Obviously, you are not interested in, as you said, "those technicalities", but only in "having the things". OK, that is your right.
Other people, including myself, have great interest in the technical aspects of lenses because, among other things, the technical aspects could explain why the Astro-Berlin Telestan 2000/10 is a mirage today.
The Celestron C8 has more or less the same focal length and aperture of the Astro-Berlin Telestan 2000/10. Thus, they are more or less equivalent lenses, but the performance of the Celestron C8 certainly is much better because the Celestron is virtually free of chromatic aberration. As for the practicality of both lenses, just compare the picture below with the one presented by the OP.
Picture extracted from this site: http://www.scopereviews.com/C8History.html _________________ If raindrops were perfect lenses, the rainbow did not exist. |
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Sun Nov 02, 2014 4:41 am Post subject: |
|
|
kds315* wrote:
SVP wrote: |
Himself wrote: |
Damn, SVP, I thought you had them all.
Or it's the only one missing from your collection? |
Yeap, still missing this one; after many-many years of searching I only managed to get hold of the pic... |
Wonderful Spyros, thanks for sharing! _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
|
|
Back to top |
|
|
SVP
Joined: 15 Jan 2009 Posts: 665 Location: Greece
Expire: 2017-12-17
|
Posted: Sun Nov 02, 2014 5:33 pm Post subject: |
|
|
SVP wrote:
@Gerald: No doubt you're right, maybe that's why Astro-Berlin also developed a somewhat slower APO-Telastan 2000/11 (similarly impossible to find, I'm afraid).
Anyway, it is my understanding that the longer lenses of that period (Astro-Berlin, TEWE-Berlin and the like) were mainly cine lenses, mostly used for b&w filming of nuclear testing efforts and missile launches at safe distances from the proving grounds; for that purpose they were quite capable. |
|
Back to top |
|
|
Abbazz
Joined: 23 Jun 2007 Posts: 1098 Location: Jakarta
|
Posted: Tue Nov 04, 2014 3:35 am Post subject: |
|
|
Abbazz wrote:
Gerald wrote: |
By this logic, the Astro-Berlin Telastan 2000/10 had a secondary spectrum of about 2mm, so wide-open performance should be extremely poor, and the Astro-Berlin Telastan had to be stopped-down to F45 to circumvent the longitudinal chromatic aberration. |
SVP wrote: |
Anyway, it is my understanding that the longer lenses of that period (Astro-Berlin, TEWE-Berlin and the like) were mainly cine lenses, mostly used for b&w filming of nuclear testing efforts and missile launches at safe distances from the proving grounds; for that purpose they were quite capable. |
And for filming a nuclear blast, you would have enough light to close down the aperture to F/45 anyway...
Cheers!
Abbazz _________________ Il n'y a rien dans le monde qui n'ait son moment decisif, et le chef-d'oeuvre de la bonne conduite est de connaitre et de prendre ce moment. - Cardinal de Retz
The 6x9 Photography Online Resource:
http://artbig.com/ |
|
Back to top |
|
|
aerozeiss
Joined: 26 Nov 2015 Posts: 1 Location: Germany
|
Posted: Thu Nov 26, 2015 10:27 am Post subject: |
|
|
aerozeiss wrote:
I just want to mention an important difference between the Celestron and the Telastan :
The Telastan 10/2000 and the Apo-Telastan 11/2000 will give you an image circle of 154 mm (if you have
managed to get one).
The Celestron is some kind of Astro - junk ( for me . . . . ), barely covering a full frame sensor.
By the way: if you found more than one of the 10/2000 or 11/2000, please let me know.
I am looking for them the last 30 years . . .
Thomas |
|
Back to top |
|
|
bernhardas
Joined: 01 Jan 2013 Posts: 1437
Expire: 2017-05-23
|
Posted: Thu Nov 26, 2015 10:45 am Post subject: |
|
|
bernhardas wrote:
Edited
Last edited by bernhardas on Tue May 10, 2016 4:48 pm; edited 1 time in total |
|
Back to top |
|
|
wolan
Joined: 30 Jun 2015 Posts: 576 Location: Zurich
|
Posted: Thu Nov 26, 2015 1:18 pm Post subject: Re: Astro-Berlin Telastan 2000/10 |
|
|
wolan wrote:
Not very good for selfies
SVP wrote: |
For all colleagues out there who like stovepipe-style long-focus lenses, I finally managed to get hold of a 58-yr old pic showing a copy of the famous-but-impossible-to-locate Astro Berlin Telastan 2000mm f/10 lens, enjoy:
|
|
|
Back to top |
|
|
kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
|
Posted: Thu Nov 26, 2015 4:27 pm Post subject: Re: Astro-Berlin Telastan 2000/10 |
|
|
kds315* wrote:
wolan wrote: |
Not very good for selfies
SVP wrote: |
For all colleagues out there who like stovepipe-style long-focus lenses, I finally managed to get hold of a 58-yr old pic showing a copy of the famous-but-impossible-to-locate Astro Berlin Telastan 2000mm f/10 lens, enjoy:
|
|
Depends how long your selfie stick is _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
|
|
Back to top |
|
|
Attila
Joined: 24 Feb 2007 Posts: 57840 Location: Hungary
Expire: 2021-11-18
|
Posted: Thu Nov 26, 2015 4:32 pm Post subject: |
|
|
Attila wrote:
_________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
|
|
Back to top |
|
|
wolan
Joined: 30 Jun 2015 Posts: 576 Location: Zurich
|
Posted: Thu Nov 26, 2015 5:10 pm Post subject: Re: Astro-Berlin Telastan 2000/10 |
|
|
wolan wrote:
kds315* wrote: |
wolan wrote: |
Not very good for selfies
SVP wrote: |
For all colleagues out there who like stovepipe-style long-focus lenses, I finally managed to get hold of a 58-yr old pic showing a copy of the famous-but-impossible-to-locate Astro Berlin Telastan 2000mm f/10 lens, enjoy:
|
|
Depends how long your selfie stick is |
Seriously, I am afraid the minimal focusing distance is such, that you need to jump on the next train to get far enough. Of course the shutter speed must be set accordingly.
Cheers. |
|
Back to top |
|
|
|