![Asaltur Binocular Observation Telescope by Carl Zeiss, - Nov 14, 2014 | Auction Team Breker in Germany Asaltur Binocular Observation Telescope by Carl Zeiss, - Nov 14, 2014 | Auction Team Breker in Germany](https://p1.liveauctioneers.com/364/62553/31260391_1_x.jpg?quality=80&version=1414317645)
Asaltur Binocular Observation Telescope by Carl Zeiss, - Nov 14, 2014 | Auction Team Breker in Germany
![DARK STAR astronomia, test strumentali, telescopi, montature astronomiche, fotografia planetaria, deep sky - STORIA DEL TELESCOPIO IN GIAPPONE DARK STAR astronomia, test strumentali, telescopi, montature astronomiche, fotografia planetaria, deep sky - STORIA DEL TELESCOPIO IN GIAPPONE](https://www.dark-star.it/s/cc_images/teaserbox_29288448.jpg?t=1409485749)
DARK STAR astronomia, test strumentali, telescopi, montature astronomiche, fotografia planetaria, deep sky - STORIA DEL TELESCOPIO IN GIAPPONE
The Franklin Institute - Flashback Friday! When The Franklin Institute's observatory opened in 1934, it had two telescopes. The one pictured here, a 10-inch Zeiss refracting telescope built by Carl Zeiss Jena
![TENERIFE, SPAIN - JULY 3: Tourist visiting telescopes at interior of Teide astronomical observatory on July 3, 2015 in Tenerife, Canary Island, Spain Stock Photo - Alamy TENERIFE, SPAIN - JULY 3: Tourist visiting telescopes at interior of Teide astronomical observatory on July 3, 2015 in Tenerife, Canary Island, Spain Stock Photo - Alamy](https://c8.alamy.com/comp/HJ8A8J/tenerife-spain-july-3-tourist-visiting-telescopes-at-interior-of-teide-HJ8A8J.jpg)
TENERIFE, SPAIN - JULY 3: Tourist visiting telescopes at interior of Teide astronomical observatory on July 3, 2015 in Tenerife, Canary Island, Spain Stock Photo - Alamy
![Zeiss telescopio refractor de 40 cm a 5 metros de distancia focal, construido en 1935. Specola Vaticana, el Observatorio de Castel Gandolfo (Italia Fotografía de stock - Alamy Zeiss telescopio refractor de 40 cm a 5 metros de distancia focal, construido en 1935. Specola Vaticana, el Observatorio de Castel Gandolfo (Italia Fotografía de stock - Alamy](https://c8.alamy.com/compes/pf5nm7/zeiss-telescopio-refractor-de-40-cm-a-5-metros-de-distancia-focal-construido-en-1935-specola-vaticana-el-observatorio-de-castel-gandolfo-italia-pf5nm7.jpg)