![SOFIA Telescope on X: "SOFIA's #telescope: 2.5 m. Kuiper Airborne Observatory, 1974: .9m; Lear Jet,1966: .3m http://t.co/RnqnpNK6pi #tbt http://t.co/lPIRUeB2Ob" / X SOFIA Telescope on X: "SOFIA's #telescope: 2.5 m. Kuiper Airborne Observatory, 1974: .9m; Lear Jet,1966: .3m http://t.co/RnqnpNK6pi #tbt http://t.co/lPIRUeB2Ob" / X](https://pbs.twimg.com/media/B8iGGAOCEAEElMa.png)
SOFIA Telescope on X: "SOFIA's #telescope: 2.5 m. Kuiper Airborne Observatory, 1974: .9m; Lear Jet,1966: .3m http://t.co/RnqnpNK6pi #tbt http://t.co/lPIRUeB2Ob" / X
![26 January 2021, Hamburg: Behind the open hatch, the reflecting telescope of the flying stratospheric observatory "SOFIA" can be seen inside a converted Boeing 747 during final checks at Lufthansa Technik. The 26 January 2021, Hamburg: Behind the open hatch, the reflecting telescope of the flying stratospheric observatory "SOFIA" can be seen inside a converted Boeing 747 during final checks at Lufthansa Technik. The](https://c8.alamy.com/comp/2E92C3H/26-january-2021-hamburg-behind-the-open-hatch-the-reflecting-telescope-of-the-flying-stratospheric-observatory-sofia-can-be-seen-inside-a-converted-boeing-747-during-final-checks-at-lufthansa-technik-the-stratospheric-observatory-for-infrared-astronomy-sofia-is-a-boeing-747-converted-into-a-flying-telescope-by-the-us-space-agency-nasa-and-the-german-aerospace-center-dlr-it-has-been-undergoing-maintenance-at-the-lufthansa-technik-base-in-hamburg-in-recent-weeks-photo-christian-charisiusdpa-2E92C3H.jpg)
26 January 2021, Hamburg: Behind the open hatch, the reflecting telescope of the flying stratospheric observatory "SOFIA" can be seen inside a converted Boeing 747 during final checks at Lufthansa Technik. The
![A schematic of the optical system of the SOFIA telescope (left) and a... | Download Scientific Diagram A schematic of the optical system of the SOFIA telescope (left) and a... | Download Scientific Diagram](https://www.researchgate.net/publication/231076027/figure/fig1/AS:300499678056449@1448656114287/A-schematic-of-the-optical-system-of-the-SOFIA-telescope-left-and-a-model-of-the.png)