The Deployable Tower Assembly : 無料・フリー素材/写真
The Deployable Tower Assembly / James Webb Space Telescope
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | The Deployable Tower Assembly (DTA) for NASA's James Webb Space Telescope was delivered to Northrop Grumman's Space Park facilities in Redondo Beach, California for integration and testing. The DTA interfaces and supports the spacecraft and the telescope structures.NASA's James Webb Space Telescope is made up of four major components — the telescope, the integrated science instrument module, the sunshield and the spacecraft. The DTA interfaces and supports the spacecraft and the telescope structures, and serves two key functions on Webb."First, in the stowed configuration, the DTA allows the telescope and instruments to fit into the rocket fairing with an acceptable center of gravity for launch. Second, in the deployed configuration, it will lift the telescope mirrors and instruments away from the heat of the main spacecraft. This allows the sunshield to unfurl, reducing the amount of radiant heat the instruments are exposed to on orbit," said Ken Aiello, Astro Aerospace cost account manager for Webb and program manager of the DTA.Webb's DTA features two large diameter telescoping tubes, separated by a mechanized lead screw. The majority of the DTA is constructed of graphite components to ensure stability and strength with extreme changes in cryogenic temperature. When fully deployed, the DTA reaches ten feet in length."The Astro DTA team expertly completed this complex project, which required a deployable structure that is both very light and extremely strong and stable," said Scott Texter, Webb optical telescope element manager, Northrop Grumman.Credit: Northrop GrummanNASA Image Use PolicyFollow us on TwitterLike us on FacebookSubscribe to our YouTube channelFollow us on Google PlusFollow us on Instagram |
| 撮影日 | 2015-03-22 22:15:16 |
| 撮影者 | James Webb Space Telescope , Greenbelt, MD, USA |
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| カメラ | Canon EOS 5D Mark III , Canon |
| 露出 | 0.025 sec (1/40) |
| 開放F値 | f/6.3 |
| 焦点距離 | 16 mm |