- Zeiss projector
A Zeiss projector is one of a line of planetarium projectors manufactured by the Carl Zeiss Company.
The first modern planetarium projectors were designed and built by
Carl Zeiss AG in 1924. Zeiss projectors are designed to sit in the middle of a dark,dome -covered room and project an accurate image of thestar s and otherastronomical object s on the dome. They are generally large, complicated, and imposing machines.The first Zeiss Mark I projector (the first planetarium projector in the world) was installed in the
Deutsches Museum inMunich in August, 1923.cite paper | author = Mark R. Chartrand | title = A Fifty Year Anniversary of a Two Thousand Year Dream - The History of the Planetarium | url = http://www.ips-planetarium.org/planetarian/articles/twothousandyr_Dream/twothousandyr_dream.html | accessdate = 2008-08-22 ] It possessed a distinctive appearance, with a single sphere of projection lenses supported above a large, angled "planet cage". Marks II through VI were similar in appearance, using two spheres of lenses separated along a central axis. Beginning with Mark VII, the central axis was eliminated and the two spheres were merged into a single, egg-shaped projection unit.The name "Zeiss projector" is often used for any type of star projector, even those not built by Zeiss. Being extremely complex, a large Zeiss projector can cost millions of US dollars.
History of development and production
* Mark I was created in 1923-1924 and was the world's first modern planetarium projector.cite paper | author = Mark R. Chartrand | title = A Fifty Year Anniversary of a Two Thousand Year Dream - The History of the Planetarium | url = http://www.ips-planetarium.org/planetarian/articles/twothousandyr_Dream/twothousandyr_dream.html | accessdate = 2008-08-22 ]
* Mark II was developed during the 1930s jointly by Carl Zeiss AG factories in Jena (East Germany) and Oberkochen (West Germany).cite paper | author = Carl Zeiss AG | title = Planetarium projector models since 1942 | url = http://www.zeiss.com/C12567A100537AB9/Contents-Frame/0A0512B5F2441B1EC1256D09003E57DD | accessdate = 2008-08-22 ]
* Following WWII and the division of Germany, each factory developed its own line of projectors.cite paper | author = Carl Zeiss AG | title = Planetarium projector models since 1942 | url = http://www.zeiss.com/C12567A100537AB9/Contents-Frame/0A0512B5F2441B1EC1256D09003E57DD | accessdate = 2008-08-22 ]
* Marks III - VI were developed in Oberkochen (West Germany) from 1957–1989. Meanwhile, the East German facility in Jena developed the ZKP projector line.cite paper | author = Carl Zeiss AG | title = Planetarium projector models since 1942 | url = http://www.zeiss.com/C12567A100537AB9/Contents-Frame/0A0512B5F2441B1EC1256D09003E57DD | accessdate = 2008-08-22 ]
* Mark VII was developed in 1993 and was the first joint project of the two Zeiss factories followingGerman reunification .cite paper | author = Carl Zeiss AG | title = Planetarium projector models since 1942 | url = http://www.zeiss.com/C12567A100537AB9/Contents-Frame/0A0512B5F2441B1EC1256D09003E57DD | accessdate = 2008-08-22 ]Planetariums That Have Featured a Zeiss Projector
References
External Links
* [http://www.zeiss.de/C12567B00038CD75/?Open Zeiss Planetariums]
Wikimedia Foundation. 2010.
